Singles
2018 Reinert Open
Champion	Olga Danilović
Runner-up	Laura Siegemund
Score	5–7, 6–1, 6–3

Mihaela Buzărnescu was the defending champion, but chose not to participate.

Olga Danilović won the title, defeating Laura Siegemund in the final, 5–7, 6–1, 6–3.

Seeds

Draw

Finals

	Semifinals							Final
	WC	Laura Siegemund	4	7	6
		Anna Zaja	6	5	4
								WC	Laura Siegemund	7	1	3
									Olga Danilović	5	6	6
	6	Bibiane Schoofs	1	3
		Olga Danilović	6	6

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	C Witthöft	6	4	6
		U Eikeri	3	6	3			1	C Witthöft	3	7	7
		S Soler Espinosa	7	6					S Soler Espinosa	6	5	5
	WC	J Steur	5	2											1	C Witthöft	1	3
		J Cristian	4	1											WC	L Siegemund	6	6
		K Muchová	6	6					K Muchová	7	2	4
	WC	L Siegemund	6	6				WC	L Siegemund	5	6	6
	7	E Kostova	2	4																		WC	L Siegemund	4	7	6
	3	T Martincová	64	6	4																		A Zaja	6	5	4
		D Seguel	77	4	0r			3	T Martincová	2	6	2
	Q	A Moratelli	1	3					A Zaja	6	4	6
		A Zaja	6	6												A Zaja	6	6
	WC	L Rüffer	6	5	6										8	Ç Büyükakçay	2	3
		O Ianchuk	1	7	4			WC	L Rüffer	3	3
	WC	K Gerlach	6	4	5			8	Ç Büyükakçay	6	6
	8	Ç Büyükakçay	2	6	7

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	6	B Schoofs	6	6
	Q	J Niemeier	4	2				6	B Schoofs	7	6
	Q	K Piter	6	6				Q	K Piter	5	2
		C Scholl	3	1											6	B Schoofs	6	4	6
		M Di Giuseppe	6	6												M Di Giuseppe	4	6	1
	Q	P Özgen	3	2					M Di Giuseppe	6	1	77
		A Potapova	6	4	77				A Potapova	4	6	65
	4	T Smitková	4	6	65																	6	B Schoofs	1	3
	5	K von Deichmann	6	77																			O Danilović	6	6
		D Radanović	2	62				5	K von Deichmann	6	77
		A Grymalska	65	6	6				A Grymalska	2	65
		N Stojanović	77	4	4										5	K von Deichmann	2	5
		İ Soylu	2	4												O Danilović	6	7
		J Pieri	6	6					J Pieri	1	1
		O Danilović	77	6					O Danilović	6	6
	2	R Hogenkamp	65	0

References

• Main Draw