2021 Qatar ExxonMobil Open – Singles

Nikoloz Basilashvili defeated Roberto Bautista Agut in the final, 7–6^(7–5), 6–2 to win the men's singles tennis title at the 2021 Qatar Open. Basilashvili saved a match point against Roger Federer in the quarterfinals.

Singles
2021 Qatar ExxonMobil Open
Champion	Nikoloz Basilashvili
Runner-up	Roberto Bautista Agut
Score	7–6(7–5), 6–2
Draw	28 (4 Q / 3 WC )
Seeds	8

Main article: 2021 Qatar ExxonMobil Open

Andrey Rublev was the defending champion, but lost in the semifinals to Bautista Agut.^[1] Rublev's run to the semifinals was notable for his not hitting a single ball, having received a bye in the first round and walkovers in both the second round and quarterfinals.

This tournament marked the return of former world No. 1 Federer to the tour for the first time since the 2020 Australian Open, due to a pair of knee surgeries since then.^[2] His defeat to Basilashvili marked a record-extending 24th and final loss from match point up in his career.

Seeds

The top four seeds received a bye into the second round.

1. Dominic Thiem (quarterfinals)
2. Roger Federer (quarterfinals)
3. Andrey Rublev (semifinals)
4. Denis Shapovalov (quarterfinals)
5. Roberto Bautista Agut (final)
6. David Goffin (second round)
7. Stan Wawrinka (first round)
8. Borna Ćorić (withdrew)

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
	5	Roberto Bautista Agut	6	6
	3	Andrey Rublev	3	3
								5	Roberto Bautista Agut	65	2
									Nikoloz Basilashvili	77	6
		Taylor Fritz	63	1
		Nikoloz Basilashvili	77	6

Top half

	First round							Second round							Quarterfinals							Semifinals
								1	D Thiem	65	6	6
	WC	MS Zayid	4	0				WC	A Karatsev	77	3	2
	WC	A Karatsev	6	6											1	D Thiem	63	6	4
	Q	R Ramanathan	4	2											5	R Bautista Agut	77	2	6
		A Bublik	6	6					A Bublik	4	3
		R Opelka	6	3	4			5	R Bautista Agut	6	6
	5	R Bautista Agut	4	6	6																	5	R Bautista Agut	6	6
																						3	A Rublev	3	3
								3	A Rublev	w/o
		R Gasquet	6	6					R Gasquet
	Q	B Rola	4	4											3	A Rublev	w/o
		D Lajović	63	3												M Fucsovics
		M Fucsovics	77	6					M Fucsovics	4	77	6
	Q	L Harris	77	66	7			Q	L Harris	6	65	2
	7	S Wawrinka	63	78	5

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	6	D Goffin	6	6
		F Krajinović	4	4				6	D Goffin	1	7	69
		L Sonego	65	4					T Fritz	6	5	711
		T Fritz	77	6												T Fritz	5	6	7
	Q	C O'Connell	3	4											4	D Shapovalov	7	3	5
		V Pospisil	6	6					V Pospisil	5	4
								4	D Shapovalov	7	6
																							T Fritz	63	1
	LL	N Gombos	2	5																			N Basilashvili	77	6
	WC	M Jaziri	6	7				WC	M Jaziri	2	2
		N Basilashvili	2	6	6				N Basilashvili	6	6
		J Millman	6	4	2											N Basilashvili	3	6	7
		J Chardy	4	6	2										2	R Federer	6	1	5
		D Evans	6	1	6				D Evans	68	6	5
								2	R Federer	710	3	7

Qualifying

Seeds

1. Lloyd Harris (qualified)
2. Norbert Gombos (qualifying competition, lucky loser)
3. Christopher O'Connell (qualified)
4. Blaž Rola (qualified)
5. Thomas Fabbiano (qualifying competition)
6. Lukáš Lacko (qualifying competition)
7. Ramkumar Ramanathan (qualified)
8. Marcelo Melo (first round)

Qualifiers

1. Lloyd Harris
2. Ramkumar Ramanathan
3. Christopher O'Connell
4. Blaž Rola

Lucky loser

1. Norbert Gombos

Qualifying draw

First qualifier

	First round							Qualifying competition
								1	Lloyd Harris	6	6
								6	Lukáš Lacko	4	3
	WC	Mousa Shanan Zayed	1	1
	6	Lukáš Lacko	6	6

Second qualifier

	First round							Qualifying competition
								2	Norbert Gombos	3	1
								7	Ramkumar Ramanathan	6	6
	Alt	Frederik Nielsen	4	1
	7	Ramkumar Ramanathan	6	6

Third qualifier

	First round							Qualifying competition
								3	Christopher O'Connell	6	79
								5	Thomas Fabbiano	3	67

Fourth qualifier

	First round							Qualifying competition
								4	Blaž Rola	77	6
								Alt	Tim Pütz	65	2
	Alt	Tim Pütz	6	6
	8/Alt	Marcelo Melo	3	2