2019 Columbus Challenger II – Singles

J. J. Wolf was the defending champion^[1] but lost in the second round to Nam Ji-sung.

Singles
2019 Columbus Challenger II
Champion	Mikael Torpegaard
Runner-up	Nam Ji-sung
Score	6–1, 7–5

Main article: 2019 Columbus Challenger II

Mikael Torpegaard won the title after defeating Nam 6–1, 7–5 in the final.

Seeds

All seeds receive a bye into the second round.

1. Michael Mmoh (second round, retired)
2. Yasutaka Uchiyama (quarterfinals)
3. Emilio Gómez (quarterfinals)
4. Donald Young (second round)
5. Darian King (withdrew)
6. Dudi Sela (semifinals, retired)
7. Roberto Quiroz (second round)
8. Mikael Torpegaard (champion)
9. Tim Smyczek (third round)
10. Li Zhe (second round)
11. Lee Duck-hee (third round)
12. Thai-Son Kwiatkowski (semifinals)
13. Filip Peliwo (second round)
14. J. J. Wolf (second round)
15. Collin Altamirano (third round)
16. João Menezes (quarterfinals)

Draw

Key

• Q = Qualifier
• WC = Wild card
• LL = Lucky loser
• Alt = Alternate
• ITF = ITF entry
• PR = Protected ranking
• SR = Special ranking
• SE = Special exempt
• JE = Junior exempt
• JR = Junior Accelerator Programme entrant
• CO = College Accelerator Programme entrant
• NG = Next Gen Accelerator Program entrant
• w/o = Walkover
• r = Retired
• d = Defaulted

Finals

	Quarterfinals							Semifinals							Final
		Nam Ji-sung	6	6
		Zhang Zhizhen	3	2
									Nam Ji-sung	6	5
								6	Dudi Sela	3	3r
	16	João Menezes	6	3	1
	6	Dudi Sela	4	6	6
																Nam Ji-sung	1	5
															8	Mikael Torpegaard	6	7
	12	Thai-Son Kwiatkowski	2	6	6
	3	Emilio Gómez	6	0	3
								12	Thai-Son Kwiatkowski	4	65
								8	Mikael Torpegaard	6	77
	8	Mikael Torpegaard	6	6
	2	Yasutaka Uchiyama	3	3

Top half

Section 1

	First round							Second round							Third round							Quarterfinals
								1	M Mmoh	2	2r
	Q	A González	6	6				Q	A González	6	1
	WC	N Mejía	2	4											Q	A González	4	2
	WC	C Kingsley	5	4												J-s Nam	6	6
		J-s Nam	7	6					J-s Nam	6	3	6
								14	J. J. Wolf	4	6	4
																							J-s Nam	6	6
																							Zh Zhang	3	2
								10	Z Li	4	4
		Zh Zhang	6	6					Zh Zhang	6	6
	Alt	H Heliövaara	3	4												Zh Zhang	6	6
	ITF	F Cerúndolo	6	6											ITF	F Cerúndolo	4	4
		F Mena	4	1				ITF	F Cerúndolo	6	69	6
								7	R Quiroz	1	711	0

Section 2

	First round							Second round							Third round							Quarterfinals
								4	D Young	66	2
	Q	D Novikov	6	6				Q	D Novikov	78	6
		Mi Redlicki	4	3											Q	D Novikov	2	1r
		V Millot	2	1r											16	J Menezes	6	4
		A Sarkissian	6	4					A Sarkissian	3	77	3
								16	J Menezes	6	65	6
																						16	J Menezes	6	3	1
																						6	D Sela	4	6	6
								11	D-h Lee	6	7
	ITF	O Luz	5	77	5			WC	J McNally	3	5
	WC	J McNally	7	64	7										11	D-h Lee	3	1
		R Shane	64	63											6	D Sela	6	6
		MF Descotte	77	77					MF Descotte	3	3
								6	D Sela	6	6

Bottom half

Section 3

	First round							Second round							Third round							Quarterfinals
								LL	A Kovacevic	4	6	5
		M Cressy	6	3	4				T Seyboth Wild	6	3	7
		T Seyboth Wild	0	6	6											T Seyboth Wild	6	5	2
	PR	D Nguyen	6	65	7										12	T-S Kwiatkowski	3	7	6
	ITF	G Brouwer	4	77	5			PR	D Nguyen	6	2	4
								12	T-S Kwiatkowski	4	6	6
																						12	T-S Kwiatkowski	2	6	6
																						3	E Gómez	6	0	3
								15	C Altamirano	6	6
	WC	J Trotter	77	6				WC	J Trotter	3	1
		Roy Smith	63	3											15	C Altamirano	5	7	0
		A Galarneau	64	6	6										3	E Gómez	7	5	6
	WC	J Boulais	77	4	0				A Galarneau	1	3
								3	E Gómez	6	6

Section 4

	First round							Second round							Third round							Quarterfinals
								8	M Torpegaard	6	7
	ITF	N Álvarez	66	65				PR	R Sarmiento	4	5
	PR	R Sarmiento	78	77											8	M Torpegaard	6	6
		Z Piros	6	7											9	T Smyczek	2	1
		Makoto Ochi	4	5					Z Piros	3	6	2
								9	T Smyczek	6	4	6
																						8	M Torpegaard	6	6
																						2	Y Uchiyama	3	3
								13	F Peliwo	3	4
	PR	C Gómez-Herrera	6	77				PR	C Gómez-Herrera	6	6
		I Marchenko	1	64											PR	C Gómez-Herrera	6	3	4
		Jared Hiltzik	3	2											2	Y Uchiyama	3	6	6
		Evan Song	6	6					E Song	79	64	4
								2	Y Uchiyama	67	77	6