2023 Knoxville Challenger – Singles

Ben Shelton was the defending champion^[1] but chose not to defend his title.

Singles
2023 Knoxville Challenger
Champion	Alex Michelsen
Runner-up	Denis Kudla
Score	7–5, 4–6, 6–2

Main article: 2023 Knoxville Challenger

Alex Michelsen won the title after defeating Denis Kudla 7–5, 4–6, 6–2 in the final.^[2]

Seeds

1. Michael Mmoh (first round)
2. Aleksandar Kovacevic (first round)
3. Alex Michelsen (champion)
4. Zachary Svajda (quarterfinals)
5. Emilio Nava (semifinals)
6. Titouan Droguet (first round)
7. Adam Walton (withdrew)
8. Shang Juncheng (first round)

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

	Semifinals							Final
		Denis Kudla	5	6	6
	5	Emilio Nava	7	4	1
									Denis Kudla	5	6	2
								3	Alex Michelsen	7	4	6
	3	Alex Michelsen	6	2	6
		Tennys Sandgren	2	6	4

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	M Mmoh	4	3
		M Damm	6	6					M Damm	64	3
		D Kudla	65	6	6				D Kudla	77	6
		P Kypson	77	3	4											D Kudla	6	77
	Q	T-S Kwiatkowski	65	6	6											A McHugh	3	65
	WC	S Kirchheimer	77	2	4			Q	T-S Kwiatkowski	6	4	3
		A McHugh	3	7	6				A McHugh	0	6	6
	LL	A Cozbinov	6	5	3																		D Kudla	5	6	6
	4	Z Svajda	6	6																		5	Em Nava	7	4	1
	SE	A Mayo	3	4				4	Z Svajda	6	7
	Q	S Fanselow	6	6				Q	S Fanselow	2	5
	Q	C Kingsley	4	2											4	Z Svajda	4	4
	LL	C Harrison	1	4											5	Em Nava	6	6
	Q	M Cassone	6	6				Q	M Cassone	4	4
		N Serdarušić	4	4				5	Em Nava	6	6
	5	Em Nava	6	6

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	6	T Droguet	4	1
		B Zhukayev	6	6					B Zhukayev	4	2
	Q	M Rosenkranz	6	2	5			WC	N Basavareddy	6	6
	WC	N Basavareddy	4	6	7										WC	N Basavareddy	3	3
	WC	J Monday	6	5	3										3	A Michelsen	6	6
		G Debru	4	7	6				G Debru	3	6	4
		B Tomic	6	65	4			3	A Michelsen	6	3	6
	3	A Michelsen	4	77	6																	3	A Michelsen	6	2	6
	8	J Shang	6	69	2																		T Sandgren	2	6	4
		A Ritschard	3	711	6				A Ritschard	6	6
	Q	E Karlovskiy	5	2					M Krueger	2	4
		M Krueger	7	6												A Ritschard	69	4
		T Sandgren	4	78	77											T Sandgren	711	6
		E Quinn	6	66	63				T Sandgren	6	7
		B Holt	6	3	77				B Holt	3	5
	2	A Kovacevic	4	6	61