Singles
1999 ATP Tour World Championships
Final
Champion	Pete Sampras
Runner-up	Andre Agassi
Score	6–1, 7–5, 6–4
Details
Draw	8 (round robin)
Events
Singles Doubles
← 1998 · ATP Finals · 2000 →

Pete Sampras defeated Andre Agassi in the final, 6–1, 7–5, 6–4 to win the singles tennis title at the 1999 Tennis Masters Cup. It was his fifth and last Tour Finals title.^[1]

Àlex Corretja was the reigning champion, but did not qualify.

	Semifinals							Final
	1	Andre Agassi	6	77
	2	Yevgeny Kafelnikov	4	65
								1	Andre Agassi	1	5	4
								5	Pete Sampras	6	7	6
	6	Nicolas Kiefer	3	3
	5	Pete Sampras	6	6

		Agassi	Kuerten	Sampras	Lapentti	RR W–L	Set W–L	Game W–L	Standings
1	Andre Agassi		6–4, 7–5	6–2, 6–2	6–1, 6–2	3–0	6–0	37–16	1
3	Gustavo Kuerten	4–6, 5–7		2–6, 3–6	6–1, 6–2	1–2	2–4	26–28	3
5	Pete Sampras	2–6, 2–6	6–2, 6–3		7–6(7–2), 7–6(7–5)	2–1	4–2	30–29	2
8	Nicolás Lapentti	1–6, 2–6	1–6, 2–6	6–7(2–7), 6–7(5–7)		0–3	0–6	18–38	4

Standings are determined by: 1. number of wins; 2. number of matches; 3. in two-players-ties, head-to-head records; 4. in three-players-ties, percentage of sets won, or of games won; 5. steering-committee decision.

		Kafelnikov	Enqvist	Kiefer	Martin	RR W–L	Set W–L	Game W–L	Standings
2	Yevgeny Kafelnikov		7–5, 3–6, 6–4	1–6, 6–4, 2–6	6–4, 1–6, 6–1	2–1	5–4	38–42	2
4	Thomas Enqvist	5–7, 6–3, 4–6		6–4, 7–5	4–6, 1–6	1–2	3–4	33–37	4
6	Nicolas Kiefer	6–1, 4–6, 6–2	4–6, 5–7		6–3, 6–2	2–1	4–3	37–27	1
7	Todd Martin	4–6, 6–1, 1–6	6–4, 6–1	3–6, 2–6		1–2	3–4	28–30	3

Standings are determined by: 1. number of wins; 2. number of matches; 3. in two-players-ties, head-to-head records; 4. in three-players-ties, percentage of sets won, or of games won; 5. steering-committee decision.

• ATP World Tour Finals appearances