1973 Commercial Union Assurance Masters – Singles

Singles
1973 Commercial Union Assurance Masters
Champion	Ilie Năstase
Runner-up	Tom Okker
Score	6–3, 7–5, 4–6, 6–3
Draw	8

Two-time defending champion Ilie Năstase successfully defended his title, defeating Tom Okker in the final, 6–3, 7–5, 4–6, 6–3 to win the singles title at the 1973 Commercial Union Assurance Masters.^[1]

	Semifinals							Final
		Ilie Năstase	6	7
		Jimmy Connors	3	5
									Ilie Năstase	6	7	4	6
									Tom Okker	3	5	6	3
		John Newcombe	6	5	5/r
		Tom Okker	3	7	3

		Năstase	Newcombe	Kodeš	Gorman	RR W–L	Set W–L	Game W–L	Standings
	Ilie Năstase		7–5, 6–3	6–4, 2–6, 6–4	4–6, 1–6	2–1	4–3	32–34	1
	John Newcombe	5–7, 3–6		6–4, 6–1	3–6, 6–2, 6–2	2–1	4–3	35–28	2
	Jan Kodeš	4–6, 6–2, 4–6	4–6, 1–6		6–3, 3–6, 6–3	1–2	3–5	34–38	3
	Tom Gorman	6–4, 6–1	6–3, 2–6, 2–6	3–6, 6–3, 3–6		1–2	4–4	34–35	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.

		Okker	Connors	Smith	Orantes	RR W–L	Set W–L	Game W–L	Standings
	Tom Okker		7–5, 6–3	7–6, 6–3	6–1, 6–3	3–0	6–0	38–21	1
	Jimmy Connors	5–7, 3–6		6–0, 3–6, 7–6	6–3, 6–2	2–1	4–3	36–30	2
	Stan Smith	6–7, 3–6	0–6, 6–3, 6–7		7–5, 4–6, 6–3	1–2	3–5	38–43	3
	Manuel Orantes	1–6, 3–6	3–6, 2–6	5–7, 6–4, 3–6		0–3	1–6	23–41	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.

• ATP World Tour Finals appearances

• 1973 Masters draw (ITF)