| Date | Event | Location | Wins | Draws | Losses | Score | Games | Place | USCF | FIDE | winnings | players | comments |
| 1951.01.17 | Max Pavey simultaneous | New York, NY | 0 | 0 | 1 | 0-1 | 1 | lost | |||||
| 1952.00.00 | Carmine Nigro home match | Brooklyn, NY | ? | ? | ? | ? | ? | N/A | |||||
| 1953.02.00 | Brooklyn Chess Club Ch | Brooklyn, NY | ? | ? | ? | ? | ? | 3rd-5th | |||||
| 1954.12.00 | Brooklyn Chess Club Ch | Brooklyn, NY | ? | ? | ? | ? | ? | 3rd-5th | |||||
| 1955.04.01 | Correspondence Tournament | Correspondence | ? | ? | 1 | 0-1 | ? | N/A | 1082 postal rating | ||||
| 1955.05.21 | U.S. Amateur Ch | Lake Mohegan, NY | 2 | 2 | 2 | 3-3 | 6 | 33rd | 1826 | 57 | won by Clinton L. Parmelee | ||
| 1955.06.00 | Washington Square Park Swiss | New York, NY | 4 | 1 | 3 | 4.5-3.5 | 8 | 15th | 32 | ||||
| 1955.06.00 | Manhattan Chess Club C Ch | New York, NY | ? | ? | ? | ? | ? | 1st | |||||
| 1955.07.00 | Manhattan Chess Club B Ch | New York, NY | ? | ? | ? | ? | ? | 1st | |||||
| 1955.07.15 | 10th U.S. Junior Championship | Lincoln, NE | 2 | 6 | 2 | 5-5 | 10 | 11th-21st | 1726 | 25 | youngest player at 12 | ||
| 1955.07.16 | U.S. Junior Speed Ch | Lincoln, NE | 3 | 0 | 2 | 3-2 | 5 | 3rd-5th | 18 | won by Ron Gross | |||
| 1955.11.26 | Yorktown Chess Club simul | New York, NY | 12 | 0 | 0 | 12-0 | 12 | N/A | watch | 12 | |||
| 1956.01.20 | Greater New York City Open | New York, NY | 5 | 0 | 2 | 5-2 | 7 | 5th-7th | 2157 | 52 | won by Bill Lombardy;top B | ||
| 1956.02.00 | Log Cabin 50-50 | West Orange, NJ | ? | ? | ? | ? | 5 | ? | |||||
| 1956.02.00 | St. Petersburg match | St. Petersburg, FL | 1 | 0 | 0 | 1-0 | 1 | won | |||||
| 1956.02.00 | Miami match | Miami, FL | 1 | 0 | 0 | 1-0 | 1 | won | |||||
| 1956.02.00 | Clinton, NC match (Al Jenkins) | Clinton, NC | 1 | 0 | 0 | 1-0 | 1 | won | |||||
| 1956.02.25 | Capablanca Chess Club Match | Havana, Cuba | 1 | 0 | 0 | 1-0 | won | board 2 | |||||
| 1956.02.26 | Havana, Cuba simul | Havana, Cuba | 10 | 2 | 0 | 11-1 | 12 | N/A | 12 | ||||
| 1956.03.01 | Log Cabin CC Match | USA, Cuba | 5 | 1 | 1 | 5.5-1.5 | 7 | N/A | board 2 | ||||
| 1956.04.00 | Manhattan Chess Club A Ch | New York, NY | 7 | 1 | 2 | 7.5-2.5 | 10 | 1st | |||||
| 1956.04.15 | Metropolitian League A Team | New York, NY | 4 | 1 | 0 | 4.5-0.5 | 5 | top scorer | 2168 | ||||
| 1956.05.25 | U.S. Amateur Ch | Ashbury Park, NJ | 3 | 2 | 1 | 4-2 | 6 | 21st | 2003 | 88 | |||
| 1956.07.01 | 11th U.S. Junior Championship | Philadelphia, PA | 8 | 1 | 1 | 8.5-1.5 | 10 | 1st | 2321 | typewriter | 28 | ||
| 1956.07.05 | U.S. Junior Speed Ch | Philadelphia, PA | 4 | 0 | 1 | 4-1 | 5 | 2nd | won by Arthur Feuerstein | ||||
| 1956.07.16 | 57th U.S. Open | Oklahoma City, OK | 5 | 7 | 0 | 8.5 | 12 | 4th-8th | 2349 | 102 | won by Bisguier | ||
| 1956.08.30 | 1st Canadian Open | Montreal | 6 | 2 | 2 | 7-3 | 10 | 8th-12th | 88 | won by Larry Evans | |||
| 1956.09.05 | Montreal simul | Montreal | 18 | 1 | 0 | 18.5-0.5 | 19 | N/A | 19 | ||||
| 1956.10.07 | 3rd Lessing J.Rosenwald Trophy | New York, NY | 2 | 5 | 4 | 4.5-6.5 | 11 | 8th-9th | 2321 | 12 | won by Reshevsky | ||
| 1956.11.23 | Eastern States Open | Washington, DC | 5 | 1 | 1 | 5.5-1.5 | 7 | 2nd-4th | 2298 | 56 | 2231 rated at end of year | ||
| 1956.12.00 | Manhattan CC Speed Ch | New York, NY | ? | ? | ? | ? | ? | 1st | |||||
| 1956.12.00 | Manhattan Chess Club Ch | New York, NY | 2 | 1 | 2 | 2.5-2.5 | 5 | 4th | 6 | ||||
| 1957.02.22 | Log Cabin Open | West Orange, NJ | 4 | 0 | 2 | 4-2 | 6 | 6th-14th | 2222 | 61 | |||
| 1957.03.15 | Max Euwe match | New York, NY | 0 | 1 | 1 | 0.5-1.5 | 2 | lost | 2 | ||||
| 1957.03.31 | Log Cabin 50-50 | West Orange, NJ | 3 | 2 | 0 | 4-1 | 5 | ? | |||||
| 1957.05.25 | Metropolitian League | New York, NY | 5 | 0 | 0 | 5-0 | 5 | N/A | board 7 for Manhattan CC | ||||
| 1957.06.13 | Reshevsky simul | New York, NY | 1 | 0 | 0 | 1-0 | 1 | won | 10 | ||||
| 1957.07.04 | New Western Open | Milwaukee, WI | 5 | 2 | 1 | 6-2 | 8 | 6th-7th | 2103 | 122 | |||
| 1957.07.15 | 12th U.S. Junior Championship | San Francisco, CA | 8 | 1 | 0 | 8.5-0.5 | 9 | 1st | 2298 | typewriter | 33 | ||
| 1957.07.16 | U.S. Junior Speed Ch | San Francisco, CA | ? | ? | ? | ? | ? | 1st | |||||
| 1957.08.06 | 58th U.S. Open | Cleveland, OH | 8 | 4 | 0 | 10-2 | 12 | 1st | 2264 | $750 | 175 | ||
| 1957.08.30 | New Jersey Open | East Orange, NJ | 6 | 1 | 0 | 6.5-0.5 | 7 | 1st | 2605 | 81 | |||
| 1957.09.00 | Benninson Match | New York, NY | 3 | 1 | 1 | 3.5-1.5 | 5 | won | 2 | ||||
| 1957.09.00 | Cardoso Match | New York, NY | 5 | 2 | 1 | 6-2 | 8 | won | 2 | ||||
| 1957.11.29 | North Central Open | Milwaukee, WI | 4 | 2 | 1 | 5-2 | 7 | 6th | 2552 | 93 | |||
| 1957.12.17 | U.S. Championship | New York, NY | 8 | 5 | 0 | 10.5-2.5 | 13 | 1st | 2722 | 14 | end of year was 2626 | ||
| 1958.05.11 | New York simul | New York, NY | 12 | 1 | 0 | 12.5-0.5 | 13 | won | 13 | WNTA (channel 13) | |||
| 1958.07.00 | Janosevic match | Yugoslavia | 0 | 2 | 0 | 1-1 | 2 | drew | 2 | ||||
| 1958.07.20 | Matulovic match | Yugoslavia | 2 | 1 | 1 | 2.5-1.5 | 4 | won | 2 | ||||
| 1958.08.05 | Interzonal | Portoroz, Yugoslavia | 6 | 12 | 2 | 12-8 | 20 | 5th-6th | 21 | ||||
| 1958.12.0 | U.S. Championship | New York, NY | 6 | 5 | 0 | 8.5-2.5 | 11 | 1st | 2665 | 12 | |||
| 1959.03.23 | Mar del Plata | Mar del Plata, Argentina | 8 | 4 | 2 | 10-4 | 14 | 3rd-4th | 15 | ||||
| 1959.04.15 | Santiago | Santiago, Chile | 7 | 1 | 4 | 7.5-4.5 | 12 | 4th-7th | 13 | ||||
| 1959.05.19 | Zurich | Zurich, Switzerland | 8 | 5 | 2 | 10.5-4.5 | 15 | 3rd-4th | 16 | ||||
| 1959.09.07 | Candidates | Yugoslavia | 8 | 9 | 11 | 12.5-15.5 | 28 | 5th-6th | 8 | ||||
| 1959.12.18 | U.S. Championship | New York, NY | 7 | 4 | 0 | 9-2 | 11 | 1st | 2636 | 12 | 2636 rated at end of year | ||
| 1960.03.29 | Mar del Plata | Mar del Plata, Argentina | 13 | 1 | 1 | 13.5-1.5 | 15 | 1st-2nd | 16 | ||||
| 1960.06.23 | Buenos Aires | Buenos Aires | 2 | 11 | 5 | 7.5-10.5 | 18 | 13th | 19 | ||||
| 1960.08.06 | Caracas simul | Venezuela | ? | ? | 1 | ? | ? | won | |||||
| 1960.08.00 | Caracs blitz | Venezuela | 7 | 0 | 2 | 7-2 | 9 | 2nd | 10 | ||||
| 1960.10.05 | Reykjavik | Reykjavik, Iceland | 3 | 1 | 0 | 3.5-0.5 | 4 | 1st | 5 | ||||
| 1960.10.17 | Olympiad | Leipzig | 10 | 6 | 2 | 13-5 | 18 | 2641 | board 1 for USA | ||||
| 1960.12.18 | U.S. Championship | New York, NY | 7 | 4 | 0 | 9-2 | 11 | 1st | 2660 | 12 | |||
| 1961.02.01 | Los Angeles simul | Los Angeles, CA | 40 | 7 | 3 | 43.5-6.5 | 50 | won | 50 | ||||
| 1961.07.16 | Reshevsky match | New York/Los Angeles | 2 | 7 | 2 | 5.5-5.5 | 11 | drew | 2 | ||||
| 1961.09.03 | Bled | Bled, Yugoslavia | 8 | 11 | 0 | 13.5-5.5 | 19 | 2nd | 2675 | 20 | |||
| 1962.01.27 | Interzonal | Stockholm, Sweden | 13 | 9 | 0 | 17.5-4.5 | 22 | 1st | 2713 | 23 | |||
| 1962.05.02 | Candidates | Curacao | 8 | 12 | 7 | 14-13 | 27 | 4th | 2687 | 8 | |||
| 1962.09.16 | Olympiad | Varna | 8 | 6 | 3 | 11-6 | 17 | 2659 | board 1 for USA | ||||
| 1962.12.16 | US Championship | New York, NY | 6 | 4 | 1 | 8-3 | 11 | 1st | 2664 | 12 | |||
| 1963.07.04 | Westen Open | Bay City, Michigan | 7 | 1 | 0 | 7.5-0.5 | 8 | 1st | 2674 | ||||
| 1963.09.01 | New York State Open | Poughkeepsie, NY | 7 | 0 | 0 | 7-0 | 7 | 1st | 2685 | 57 | |||
| 1963.12.15 | US Championship | New York, NY | 11 | 0 | 0 | 11-0 | 11 | 1st | 2734 | 2690 | 12 | ||
| 1965.08.25 | Capablanca Memorial | Havana, Cuba | 12 | 6 | 3 | 15-6 | 21 | 2nd-4th | 2706 | 22 | |||
| 1965.12.12 | US Championship | New York, NY | 8 | 1 | 2 | 8.5-2.5 | 11 | 1st | 2708 | 12 | |||
| 1966.07.17 | Piatigorsky Cup | Santa Monica, CA | 7 | 8 | 3 | 11-7 | 18 | 2nd | 2713 | 10 | |||
| 1966.10.26 | Olympiad | Havana, Cuba | 14 | 2 | 1 | 15-2 | 17 | 2748 | bd 1 | ||||
| 1966.12.00 | US Championship | New York, NY | 8 | 3 | 0 | 9.5-1.5 | 11 | 1st | 2758 | 12 | |||
| 1967.03.24 | Monaco | Monaco | 6 | 2 | 0 | 7-1 | 8 | 1st | 2762 | 10 | |||
| 1967.08.00 | Skopje | Skopje | 12 | 3 | 2 | 13.5-3.5 | 17 | 1st | 2741 | 18 | |||
| 1967.10.16 | Interzonal | Sousse | 7 | 3 | 0 | 8.5-1.5 | 10 | 2754 | |||||
| 1968.06.17 | Nathanya | Nathanya | 10 | 3 | 0 | 11.5-1.5 | 13 | 1st | 2739 | 14 | |||
| 1968.09.07 | Vinkovci | Vinkovci | 9 | 4 | 0 | 11-2 | 13 | 1st | 2745 | 14 | |||
| 1969.00.00 | Metropolitan League | New York, NY | 1 | 0 | 0 | 1-0 | 1 | ||||||
| 1970.03.29 | USSR vs World - Petrosian | Belgrade | 2 | 2 | 0 | 3-1 | 4 | won | 2755 | bd 2 | |||
| 1970.04.08 | Herzeg Novi 5-minute | Herzeg Novi | 17 | 4 | 1 | 19-2 | 22 | 1st | 12 | ||||
| 1970.04.12 | Rovinj/Zagreb | Rovinj/Zagreb | 10 | 6 | 1 | 13-4 | 17 | 1st | 2748 | 18 | |||
| 1970.07.19 | Buenos Aires | Buenos Aires | 13 | 4 | 0 | 15-2 | 17 | 1st | 2762 | 18 | |||
| 1970.09.06 | Olympiad | Siegen | 8 | 4 | 1 | 10-3 | 13 | 2755 | bd 2 | ||||
| Andersson Exhibition | 1 | 0 | 0 | 1-0 | 1 | won | |||||||
| 1970.11.09 | Interzonal | Palma de Mallorca | 15 | 7 | 1 | 18.5-4.5 | 23 | 1st | 2771 | 2740 | 24 | ||
| 1971.05.16 | Candidates-1/4 final-Taimanov | Vancouver | 6 | 0 | 0 | 6-0 | 6 | won | 2801 | 2760 | |||
| 1971.07.06 | Candidates-1/2 final-Larsen | Denver | 6 | 0 | 0 | 6-0 | 6 | won | 2825 | ||||
| 1971.08.08 | Manhattan Blitz | New York, NY | 21 | 1 | 0 | 21.5-0.5 | 22 | 1st | |||||
| 1971.09.30 | Candidates final-Petrosian | Buenos Aires | 5 | 3 | 1 | 7.5-2.5 | 9 | won | 2824 | 2785 | |||
| 1972.07.11 | World Championship-Spassky | Reykjavik, Iceland | 7 | 11 | 3 | 12.5-8.5 | 21 | won | 2810 | 2780 | |||
| 1992.09.30 | Spassky match | Sveti Stefan, Yugoslavia | 10 | 15 | 5 | 17.5-12.5 | 30 | won |