| Year |
Tournament |
W-D-L |
Place |
| 1955 |
US Junior Championship, Lincoln |
2-6-2 |
10th-20th |
| |
|
|
|
| 1956 |
US Amateur Championship, New Jersey |
3-2-1 |
21st |
| |
US Junior Championship, Philadelphia |
8-1-1 |
1st |
| |
US Open, Oklahoma City |
5-7-0 |
4th-8th |
| |
Canadian Open, Montreal |
6-2-2 |
8th-12th |
| |
Rosenwald Memorial, New York City |
2-5-4 |
8th |
| |
Eastern States Open, Washington, D.C. |
4-2-0 |
2nd-4th |
| |
Manhattan C.C. Championship, (Semi final), N.Y.C. |
2-1-2 |
4th |
| |
|
|
|
| 1957 |
Log Cabin Open, West Orange |
4-0-2 |
6th |
| |
Log Cabin 50-50, West Orange |
3-2-0 |
? |
| |
New Western Open, Milwaukee |
5-2-1 |
7th |
| |
US Junior, San Francisco |
8-1-0 |
1st |
| |
US Open, Cleveland |
8-4-0 |
1st |
| |
New Jersey Open, East Orange |
6-1-0 |
1st |
| |
North Central Open, Milwaukee |
4-2-1 |
5th-11th |
| |
US Championship, New York |
8-5-0 |
1st |
| |
|
|
|
| 1958 |
Interzonal, Porotoz |
6-12-2 |
5th-6th |
| |
US Championship, New York |
6-5-0 |
1st |
| |
|
|
|
| 1959 |
Mar del Plata |
8-4-2 |
3rd-4th |
| |
Santiago, Chile |
7-1-4 |
4th-7th |
| |
Zurich |
8-5-2 |
3rd-4th |
| |
Candidate's Tournament, Belgrade/Bled/Zagreb |
8-9-11 |
5th-6th |
| |
US Championship, New York |
7-4-0 |
1st |
| |
|
|
|
| 1960 |
Mar del Plata |
13-1-1 |
1st-2nd |
| |
Buenos Aires |
3-11-5 |
13th |
| |
Reykjavik |
3-1-0 |
1st |
| |
Leipzig Olympiad (First board) |
10-6-2 |
- |
| |
US Championship, New York |
7-4-0 |
1st |
| |
|
|
|
| 1961 |
Bled |
8-11-0 |
2nd |
| |
|
|
|
| 1962 |
Interzonal, Stockholm |
13-9-0 |
1st |
| |
Candidate's Tournament, Curacao |
8-12-7 |
4th |
| |
Varna Olympiad (First board) |
8-6-3 |
- |
| |
US Championship, New York |
6-4-1 |
1st |
| |
|
|
|
| 1963 |
Western Open, Bay City |
7-1-0 |
1st |
| |
New York State Open, Poughkeepsie |
7-0-0 |
1st |
| |
US Championship, New York |
11-0-0 |
1st |
| |
|
|
|
| 1965 |
Capablanca Memorial, Havana |
12-6-3 |
2nd-4th |
| |
US Championship, New York |
8-1-2 |
1st |
| |
|
|
|
| 1966 |
Piatigorsky Cup, Santa Monica |
7-8-3 |
2nd |
| |
Havana Olympiad (First board) |
14-2-1 |
- |
| |
US Championship, New York |
8-3-0 |
1st |
| |
|
|
|
| 1967 |
Monaco |
6-2-1 |
1st |
| |
Skopje |
12-3-2 |
1st |
| |
Interzonal, Sousse |
7-3-0 |
Withdrew |
| |
|
|
|
| 1968 |
Netanya |
10-3-0 |
1st |
| |
Vinkovci |
9-4-0 |
1st |
| |
|
|
|
| 1970 |
USSR vs. the Rest of the World, Belgrade (Second board) |
2-2-0 |
- |
| |
Rovinj/Zagreb |
10-6-1 |
1st |
| |
Buenos Aires |
13-4-0 |
1st |
| |
Siegen Olympiad (First board) |
8-4-1 |
- |
| |
Interzonal, Palma de Mallorca |
15-7-1 |
1st |
| |
|
|
|
| Year |
Match |
W-D-L |
Place |
| 1957 |
vs. Euwe, New York |
0-1-1 |
lost |
| |
vs. Cardoso, New York |
5-2-1 |
won |
| |
|
|
|
| 1958 |
vs. Janosevic, Belgrade |
0-2-0 |
drew |
| |
vs. Matulovic, Belgrade |
2-1-1 |
won |
| |
|
|
|
| 1961 |
vs. Reshevsky, New York/Los Angeles |
2-7-2 |
drew |
| |
|
|
|
| 1971 |
vs. Taimanov, Vancouver (Candidates quarterfinal) |
6-0-0 |
won |
| |
vs. Larsen, Denver (Candidates semifinal) |
6-0-0 |
won |
| |
vs. Petrosian, Buenos Aires (Candidates final) |
5-3-1 |
won |
| |
|
|
|
| 1972 |
vs. Spassky, Reykjavik (World Championship) |
7-11-3 |
won |
| |
|
|
|
| 1992 |
vs. Spassky, Sveti Stefan-Belgrade (World Ch. Rematch) |
10-15-5 |
won |
