Singles
2018 Koser Jewelers Tennis Challenge
Champion	Madison Brengle
Runner-up	Kristie Ahn
Score	6–4, 1–0, ret.

Vera Lapko was the defending champion, but chose to participate in Montreal.

Madison Brengle won the title after Kristie Ahn retired in the final at 6–4, 1–0.

Seeds

Draw

Finals

	Semifinals							Final
		Priscilla Hon	5	5
	3	Madison Brengle	7	7
								3	Madison Brengle	6	1
									Kristie Ahn	4	0r
	PR	Jessica Pegula	77	67	4
		Kristie Ahn	63	79	6

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	N Gibbs	6	65	2
		P Hon	4	77	6				P Hon	6	7
		O Rogowska	78	6					O Rogowska	2	5
	WC	L Davis	66	4												P Hon	77	3
		F Di Lorenzo	6	6											7	A Kalinina	65	0r
		J Loeb	2	3					F Di Lorenzo	3	2
	Q	H Carter	2	2				7	A Kalinina	6	6
	7	A Kalinina	6	6																			P Hon	5	5
	3	M Brengle	77	2	6																	3	M Brengle	7	7
		Ar Rodionova	63	6	1			3	M Brengle	4	6	0
	WC	J Kissell	0	2					G Taylor	6	3	0r
		G Taylor	6	6											3	M Brengle	6	6
		S Lisicki	6	77											SE	A Li	0	2
		G Min	1	65					S Lisicki	3	3r
	SE	A Li	6	79				SE	A Li	6	4
	5	H Watson	1	67

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	6	A Potapova	2	6	6
	Q	R Ozaki	6	4	0			6	A Potapova	2	65
	WC	G Brodsky	6	5	7			WC	G Brodsky	6	77
	WC	S Chang	2	7	5										WC	G Brodsky	2	4
	PR	O Govortsova	4												PR	J Pegula	6	6
		F Stollár	0r					PR	O Govortsova	2	2
	PR	J Pegula	6	6				PR	J Pegula	6	6
	4	V Zvonareva	4	3																		PR	J Pegula	77	67	4
	8	N Broady	2	64																			K Ahn	63	79	6
		K Ahn	6	77					K Ahn	w/o
	LL	E Hozumi	3	2					K Swan
		K Swan	6	6												K Ahn	4	6	6
	Q	K Birrell	77	6											Q	K Birrell	6	4	4
	Q	J Ponchet	65	1				Q	K Birrell	6	77
		G García Pérez	6	6					G García Pérez	2	63
	2	A Rus	4	0

References

• Main Draw