Singles
2018 Columbus Challenger
Champion	Michael Mmoh
Runner-up	Jordan Thompson
Score	6–3, 7–6(7–4)

Ante Pavić was the defending champion but chose not to defend his title.

Michael Mmoh won the title after defeating Jordan Thompson 6–3, 7–6^(7–4) in the final.

Seeds

Draw

Finals

	Semifinals							Final
	1	Jordan Thompson	5	77	77
	7	Roberto Quiroz	7	64	64
								1	Jordan Thompson	3	64
								3	Michael Mmoh	6	77
	3	Michael Mmoh	7	6
	WC	Mikael Torpegaard	5	3

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	J Thompson	6	7
	Q	Evan Song	0	5				1	J Thompson	6	77
		R Cid Subervi	64	63					K Uchida	1	62
		K Uchida	77	77											1	J Thompson	4	6	6
	Q	R Shane	65	5											5	D Köpfer	6	1	3
	WC	J McNally	77	7				WC	J McNally	4	6	4
	LL	D Pérez Sanz	1	0				5	D Köpfer	6	4	6
	5	D Köpfer	6	6																		1	J Thompson	5	77	77
	Q	L Saville	7	6																		7	R Quiroz	7	64	64
		A González	5	4				Q	L Saville	6	2	7
		J Hernández-Fernández	6	6					J Hernández-Fernández	4	6	5
		A Harris	4	1											Q	L Saville	3	1
		T Paul	6	6											7	R Quiroz	6	6
		E King	3	4					T Paul	64	6	66
		J-P Smith	6	64	67			7	R Quiroz	77	3	78
	7	R Quiroz	3	77	79

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	6	A Popyrin	4	77	7
		R Ortega Olmedo	6	63	5			6	A Popyrin	6	7
		S Diez	6	6					S Diez	3	5
		M Giron	3	4											6	A Popyrin	4	3
	SE	J Duckworth	79	66	3										3	M Mmoh	6	6
		E Gómez	67	78	6				E Gómez	3	2
		S Bangoura	6	1	2			3	M Mmoh	6	6
	3	M Mmoh	3	6	6																	3	M Mmoh	7	6
	8	M Banes	63	4																		WC	M Torpegaard	5	3
	WC	M Torpegaard	77	6				WC	M Torpegaard	6	6
	WC	J. J. Wolf	7	6				WC	J. J. Wolf	1	4
		J Choinski	5	4											WC	M Torpegaard	6	6
		V Millot	2	4											Q	T-S Kwiatkowski	4	2
	Q	T-S Kwiatkowski	6	6				Q	T-S Kwiatkowski	77	2	79
	WC	Martin Joyce	3	713	1			2	P Polansky	65	6	67
	2	P Polansky	6	611	6

References

• Main Draw
• Qualifying Draw