2018 ATP Finals – Singles

Alexander Zverev defeated Novak Djokovic in the final, 6–4, 6–3 to win the singles tennis title at the 2018 ATP Finals.^[1] It was his first ATP Finals title.

Singles
2018 ATP Finals
Champion	Alexander Zverev
Runner-up	Novak Djokovic
Score	6–4, 6–3

Main article: 2018 ATP Finals

Grigor Dimitrov was the reigning champion, but failed to qualify this year.^[2]

Rafael Nadal withdrew from the event due to an abdominal injury and was replaced by John Isner. Djokovic secured the year-end world No. 1 ranking.^[3] Juan Martín del Potro qualified for the first time since 2013, but withdrew with a knee injury and was replaced by Kei Nishikori.^[4]

Kevin Anderson and Isner made their tournament debuts.^[5]

Seeds

1. Novak Djokovic (final)
2. Roger Federer (semifinals)
3. Alexander Zverev (champion)
4. Kevin Anderson (semifinals)
5. Marin Čilić (round robin)
6. Dominic Thiem (round robin)
7. Kei Nishikori (round robin)
8. John Isner (round robin)

Alternates

1. Karen Khachanov (Did not play)
2. Borna Ćorić (Did not play)

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
	1	Novak Djokovic	6	6
	4	Kevin Anderson	2	2
								1	Novak Djokovic	4	3
								3	Alexander Zverev	6	6
	2	Roger Federer	5	65
	3	Alexander Zverev	7	77

Group Guga Kuerten

		Djokovic	Zverev	Čilić	Isner	RR W–L	Set W–L	Game W–L	Standings
1	Novak Djokovic		6–4, 6–1	7–6(9–7), 6–2	6–4, 6–3	3–0	6–0 (100%)	37–20 (65%)	1
3	Alexander Zverev	4–6, 1–6		7–6(7–5), 7–6(7–1)	7–6(7–5), 6–3	2–1	4–2 (67%)	32–33 (49%)	2
5	Marin Čilić	6–7(7–9), 2–6	6–7(5–7), 6–7(1–7)		6–7(2–7), 6–3, 6–4	1–2	2–5 (29%)	38–41 (48%)	3
8	John Isner	4–6, 3–6	6–7(5–7), 3–6	7–6(7–2), 3–6, 4–6		0–3	1–6 (14%)	30–43 (41%)	4

Group Lleyton Hewitt

		Federer	Anderson	Thiem	Nishikori	RR W–L	Set W–L	Game W–L	Standings
2	Roger Federer		6–4, 6–3	6–2, 6–3	6–7(4–7), 3–6	2–1	4–2 (67%)	33–25 (57%)	1
4	Kevin Anderson	4–6, 3–6		6–3, 7–6(12–10)	6–0, 6–1	2–1	4–2 (67%)	32–22 (59%)	2
6	Dominic Thiem	2–6, 3–6	3–6, 6–7(10–12)		6–1, 6–4	1–2	2–4 (33%)	26–30 (46%)	3
7	Kei Nishikori	7–6(7–4), 6–3	0–6, 1–6	1–6, 4–6		1–2	2–4 (33%)	19–33 (37%)	4

Standings are determined by: 1. number of wins; 2. number of matches played; 3. in two-player ties, head-to-head records; 4. in three-player ties, percentage of sets won, then percentage of games won, then ATP rankings.^[6]