1974 Commercial Union Assurance Masters – Singles

Guillermo Vilas defeated the three-time defending champion Ilie Năstase in the final, 7–6, 6–2, 3–6, 3–6, 6–4 to win the singles title at the 1974 Commercial Union Assurance Masters.

Blue group
''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.''

White group
''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.''