Bracket

Note: Two teams in the same division could not meet in the division series.

American League

National League

Barry Bonds surpasses Hank Aaron

Barry Bonds, left fielder for the San Francisco Giants, surpassed Hank Aaron as the all-time home run leader in Major League Baseball history with his 756th career home run off Mike Bacsik of the Washington Nationals in the fifth inning of their game August 7 at AT&T Park in San Francisco, California. The 3–2 pitch with one out and nobody on base was hit at 8:51 PM US PDT and according to hittrackeronline.com was estimated to have gone 422 feet. However, the Nationals came back and won the game, 8–6. Through his final home game (and last game of the season), on September 26, Bonds has hit 762 home runs.

The baseball that was hit for the record was caught by Mets fan Matt Murphy, who put the ball up for auction online. The winning bidder was fashion designer Marc Ecko, who purchased the baseball for $752,467 (US) and let fans decide what to do with it in an internet poll. Options included donating the ball to the Baseball Hall of Fame as-is, donating it marked with an asterisk (reflecting the widely held belief that Bonds used performance-enhancing drugs to break the record), or sending the baseball into space. The vote decided that an asterisk would be added, and the ball donated to Cooperstown. In an interview that aired on MSNBC's Countdown with Keith Olbermann on November 1 and 2, Bonds stated to interviewer Jim Gray that if the ball were to be put on display with the asterisk, he would boycott his own Hall of Fame induction if he were elected.

Other career milestones

• John Smoltz, right-handed pitcher for the Atlanta Braves earned his 200th win on May 24, defeating the New York Mets and longtime teammate Tom Glavine at Turner Field in Atlanta.
• Roy Halladay, right-handed pitcher for the Toronto Blue Jays, earned his 100th win on May 31 against the Chicago White Sox at Rogers Centre in Toronto, Ontario, Canada.
• Trevor Hoffman, a closer for the San Diego Padres, became the first pitcher in Major League history to earn his 500th career save on June 6 against the Los Angeles Dodgers at Petco Park in San Diego, California.
• Mark Buehrle, left-handed pitcher for the Chicago White Sox, earned his 100th win on June 10 against the Houston Astros at U.S. Cellular Field in Chicago.
• Sammy Sosa, right fielder for the Texas Rangers, hit his 600th career home run on June 20 against the Chicago Cubs at Rangers Ballpark in Arlington in Arlington, Texas. Sosa became the fifth player in Major League history to hit 600 career home runs and the second to hit his 600th career home run against his former team; in 2002, Barry Bonds hit his 600th home run against his former team, the Pittsburgh Pirates.
• Ryan Howard, first baseman for the Philadelphia Phillies, hit his 100th career home run on June 27 against the Cincinnati Reds at Citizens Bank Park in Philadelphia. He accomplished this in his 325th career game, becoming the fastest player in Major League Baseball history to reach this milestone. Howard also set a dubious record September 27, when he struck out against the Braves' John Smoltz, whiffing for the 196th time in a season. He ended the season with 199 strikeouts, a new record.
• Frank Thomas, the Toronto Blue Jays' designated hitter, hit his 500th career home run on June 28 against the Minnesota Twins at the Hubert H. Humphrey Metrodome in Minneapolis, Minnesota, against Carlos Silva in the first inning. The Metrodome was also the site of his first home run as a member of the Chicago White Sox.
• Craig Biggio, second baseman for the Houston Astros, got his 3,000th career hit on June 28 against the Colorado Rockies at Minute Maid Park in Houston, Texas. Biggio was 5-for-6 in the game and was thrown out at second on his 3000th hit. Biggio became the 27th member of the 3,000 hit club, and is one of only nine players to get all 3,000 hits with one team. Biggio announced later in the season that he would retire following the completion of the season, finishing his career with 3,060 hits.
• Roger Clemens, pitcher for the New York Yankees, earned his 350th career win on July 2 against the Minnesota Twins at Yankee Stadium in The Bronx, New York. Clemens became the eighth pitcher to reach that mark.
• Alex Rodriguez, third baseman for the New York Yankees, hit his 500th career home run on August 4 against the Kansas City Royals at Yankee Stadium. At 32 years, 8 days of age, he became the youngest player to reach the 500-homer mark.
• Left-handed pitcher Tom Glavine of the New York Mets, earned his 300th career win against the Chicago Cubs at Wrigley Field on August 5 in front of a nationwide audience on ESPN's Sunday Night Baseball. Glavine became the fifth left-handed pitcher to win 300 games, the first since Steve Carlton in 1983, and the 23rd pitcher to win 300.
• Greg Maddux of the San Diego Padres became the first pitcher in history to record at least 10 wins in 20 consecutive seasons in the Padres' 14–3 defeat of the Phillies at Citizens Bank Park in Philadelphia, Pennsylvania, on August 24. The game also marked Maddux's 700th career start.
• Right-handed pitcher Pedro Martínez of the New York Mets became the 15th pitcher in history to record his 3,000th career strikeout when he dismissed his opposing pitcher, Aaron Harang, in the second inning of the Mets' 10–4 win over the Cincinnati Reds on September 3 at Great American Ball Park in Cincinnati. The game was the first MLB appearance of Martínez after rotator cuff surgery immediately after the end of the 2006 season.
• Todd Jones, the Detroit Tigers' right-handed closer, earned his 300th career save September 16 against the Minnesota Twins.
• Chicago White Sox designated hitter Jim Thome hit a two-run walk-off home run on September 16 for his 500th career home run at U.S. Cellular Field in Chicago, leading the White Sox to a 9–7 win over the Los Angeles Angels, making the 2007 season the first in which three players hit their 500th homer. It was also the first time in MLB history that a player reached the 500-homer mark with a walk-off homer.
• Kenny Rogers, Detroit Tigers left-handed pitcher, recorded his 91st career pickoff against Jason Michaels of the Cleveland Indians on September 17. This tied him with Mark Langston for most all-time.
• Andy Pettitte, New York Yankees southpaw, recorded his 200th career win against the Baltimore Orioles on September 19.
• C.C. Sabathia, a left-handed pitcher for the Cleveland Indians won his 100th game and struck out his 1000th batter for the Tribe, becoming the youngest pitcher to do so since Greg Maddux.

Team milestones

• The Chicago Cubs of the National League recorded their 10,000th win in all major leagues against the Atlanta Braves on June 3, at Wrigley Field in Chicago. They became the second team to reach this mark after the New York/San Francisco Giants were the first. However, this tally includes 77 wins gained during Chicago's years in the National Association (1871, 1874 and 1875). These wins are not considered official by Major League Baseball. Through 2007, the Cubs have 9,985 official wins.
• The Philadelphia Phillies of the National League, recorded their 10,000th loss, a 10–2 loss to the St. Louis Cardinals on July 15, at Citizens Bank Park in Philadelphia, Pennsylvania. They became the first team in the four major sports leagues (MLB, NHL, NFL, and NBA) to accomplish this. However, Major League Baseball's season, by number of games, is almost twice as long as the NHL and NBA seasons and ten times longer than the NFL season. Also, the Phillies have existed since 1883, more than 30 years longer than any of the other major North American leagues (NHL: 1917, NFL: 1920, NBA: 1946).
• The Texas Rangers of the American League scored 30 runs in a 30–3 rout of the Baltimore Orioles on August 22, at Oriole Park at Camden Yards in Baltimore, Maryland. The Rangers set both a new American League and the modern Major League (post-1900) record for runs scored in a game, and became the first team since the Chicago Colts scored 36 runs against the Louisville Colonels in 1897 to score at least 30 runs in a game. The previous record was 29, first set by the Boston Red Sox in 1950 at Fenway Park against the Orioles' predecessors, the St. Louis Browns, and equaled at Municipal Stadium in Kansas City, Missouri, in 1955 by the Chicago White Sox against the Kansas City Athletics, who had moved from Philadelphia the year before. The Rangers won the nightcap, 9–7 and extended the newly-set record for most runs in a doubleheader in the American League to 39.
• The New York Mets became the first team in the divisional era (since 1969) to blow a seven-game lead past September 12 as the Philadelphia Phillies raced by them on September 30 to win the National League Eastern Division at Citizens Bank Park in Philadelphia, Pennsylvania, defeating the Washington Nationals, 6–1, while the Mets fell to the Florida Marlins, 8–1 at Shea Stadium in Flushing Meadows, Queens, New York.
• The Colorado Rockies, winners of the NL wild-card, won their first-ever playoff series by sweeping the Philadelphia Phillies in the NLDS. The Rockies then swept the Arizona Diamondbacks in the NLCS to claim their first-ever National League championship.

Other accomplishments

Jackie Robinson

On April 15, Major League Baseball celebrated the sixtieth anniversary of the debut of Jackie Robinson at Ebbets Field in Brooklyn, breaking the color barrier. Cincinnati Reds outfielder Ken Griffey Jr. asked Robinson's widow, Rachel, and commissioner Bud Selig for permission to wear Robinson's number 42 in honor of him. He was granted permission, and Selig later said that any player who wanted to wear number 42 on his jersey could. The jersey was worn without the players' name on the back, as was the case when Robinson played with the Brooklyn Dodgers. All jerseys that were worn were auctioned off with all the proceeds donated to the Jackie Robinson Foundation, an organization which awards scholarships to African-American high school graduates to further themselves in colleges academically.

The Dodgers, Cardinals, and Brewers elected to have the entire team wear number 42 in his honor. The Pittsburgh Pirates, Phillies, and Astros were also scheduled to share that honor, but their games were postponed due to rain. The Phillies and Astros honored Robinson on April 23 when they made up their postponed game as originally planned, while the Pirates waited until April 27 to honor Robinson by wearing #42 as a team against the Reds.

Larry Doby

On August 10, the Cleveland Indians paid tribute to Larry Doby, the first African-American to play in the American League at Jacobs Field in Cleveland, Ohio. Every player on the Indians wore number 14, the number Doby wore during his career with the Indians.

Retiring players

Barry Bonds

Roger Clemens

Craig Biggio

Biggio joined the 3,000 hit club during the 2007 season, and became the first player to be called out in the same play that they got their 3000th hit. He was tagged out while trying to stretch his hit into a double. He announced his retirement on July 24, about a month after achieving the milestone. He finished his career with 668 doubles, good for 5th all-time at the time he retired. In the penultimate game of his career, on September 29, he was brought in as a catcher, playing the position for the first time in 15 years.

Jeff Conine

Conine, then of the New York Mets, announced his retirement on September 20, right before their last road trip to visit the Florida Marlins. The Marlins, fans of which refer to him as "Mr. Marlin", honored him for his contribution to their two World Series titles in 1997 and 2003. Ironically, losses to the Marlins contributed to the Mets failing to make the playoffs.

Mike Lieberthal

Shawn Green

Other awards

• Comeback Players of the Year: Carlos Peña (First baseman, TB, American); Dmitri Young (First baseman, WSH, National).
• Edgar Martínez Award (Best designated hitter): David Ortiz (BOS)
• Hank Aaron Award: Alex Rodriguez (NYY, American); Prince Fielder (MIL, National).
• Roberto Clemente Award (Humanitarian): Craig Biggio (HOU).
• Rolaids Relief Man Award: J. J. Putz (SEA, American); José Valverde (ARI, National).
• Delivery Man of the Year (Best Reliever): Jonathan Papelbon (BOS).
• Warren Spahn Award (Best left-handed pitcher): CC Sabathia (CLE)
• Clutch Performer of the Year: Alex Rodriguez (NYY).

Player of the Month

Pitcher of the Month

Rookie of the Month

Uniforms

• The Arizona Diamondbacks changed from purple, copper and turquoise to a modern Sedona Red, sand and black scheme, complete with re-colored primary and alternate logos, along with new scripts and sleeve insignia.
• The Chicago Cubs have restored player names to the back of their home jerseys and removed their blue alternate jersey.
• The Cincinnati Reds changed from pinstriped vests to traditional sleeve jerseys at home with scarlet soutache trim de-emphasizing black trim and a new early 20th-Century lettering and numbering font as well as the return of "Mr. Redleg", the 1950s sleeve patch/mascot supplanting the modern "Mr. Red".
• The Los Angeles Angels added a red alternate jersey.
• The Los Angeles Dodgers restored player names to the back of their jerseys and removed the white trim from their road uniforms.
• The Pittsburgh Pirates added a red alternate jersey to be worn on Friday nights, paying tribute to the city's "Redd Up" cleanup campaign. The lone exception was the April 27 game against the Cincinnati Reds when the team wore #42 in tribute to Jackie Robinson as stated above.

Commemorative patches

• The Atlanta Braves wore a patch remembering the lives of Johnny Sain and Lew Burdette, two players who were traded for each other in a deal in 1951 between the then-Boston Braves and the New York Yankees. The patch read their initials ("JS" on the left, "LB" on the right) between the number they shared, "33." Both died during the offseason.
• The Boston Red Sox wore their green St. Patrick's Day uniform on April 20 against the Yankees in tribute to Boston Celtics longtime coach and president Red Auerbach.
• The Florida Marlins wore a patch celebrating the 10th anniversary of their 1997 World Series championship.
• The Milwaukee Brewers, who since 1998 have played in the National League, wore a patch celebrating the 25th anniversary of their 1982 American League championship. The patch, however, was only worn on their Friday night retro uniforms.
• The Minnesota Twins wore a black armband during their first home stand and a patch in memory of Herb Carneal, their radio play-by-play announcer from 1962 until 2006, who died on April 1, 2007, for their first home stand. They then switched to a red circular patch featuring an old-style microphone and the name "Herb."
• The New York Yankees wore a black armband in memory of Cory Lidle, who was killed in a plane crash in Manhattan on October 11, 2006. They added the retired #10 above the armband in memory of longtime player and announcer Phil Rizzuto, who died on August 14.
• The Philadelphia Phillies wore a black patch with "VUK" written in white in memory of longtime team player, coach and scout John Vukovich, who died during spring training.
• The San Francisco Giants wore two patches for the 2007 season:
  • An alternate version of the 2007 All-Star Game logo; being the host team of the 2007 All-Star Game.
  • Following the death of former player Rod Beck, they added a black square with "BECK 47" in white lettering.
• The Seattle Mariners wore a patch celebrating their 30th anniversary, featuring their two home stadiums they have played in, the Kingdome and Safeco Field, against the background of Mount Rainier and the Space Needle.
• The St. Louis Cardinals wore two patches for the 2007 season:
  • They wore a patch celebrating their 2006 World Series victory over the Detroit Tigers on their home uniforms;
  • Following the death of pitcher Josh Hancock, they added a black "32" patch on their jerseys in his memory.
• The Tampa Bay Devil Rays wore a patch celebrating the franchise's 10th season of existence.
• The Toronto Blue Jays wore a patch in black with a white "SP" starting on August 20 in remembrance of Sam Pollock, a legendary NHL general manager most notably with the Montreal Canadiens who died on August 15. Pollack had served as the Jays' Chairman and CEO from 1995 to 2000.
• The Washington Nationals wore a patch for their last home stand, commemorating the final few games at RFK Stadium.

American League

National League