| Tournament | Winner | % Correct |
|---|---|---|
| 2020 U.S. Open | Dominic Thiem | 96%
|
| 2014 U.S. Open | Marin Cilic | 96%
|
| 2009 U.S. Open | Juan Martin del Potro | 95%
|
| 2021 U.S. Open | Daniil Medvedev | 93%
|
| 2003 U.S. Open | Andy Roddick | 85%
|
| 2001 Wimbledon | Goran Ivanisevic | 82%
|
| 2003 French Open | Juan Carlos Ferrero | 77%
|
| 1998 French Open | Carlos Moya | 74%
|
| 2004 French Open | Gaston Gaudio | 74%
|
| 1989 French Open | Michael Chang | 74%
|
| 2002 Australian Open | Thomas Johansson | 67%
|
| 1983 French Open | Yannick Noah | 66%
|
| 1996 Wimbledon | Richard Krajicek | 62%
|
| 2002 French Open | Albert Costa | 61%
|
| 1987 Wimbledon | Pat Cash | 60%
|
| 1998 Australian Open | Petr Korda | 57%
|
| 1991 Wimbledon | Michael Stich | 55%
|
| 1995 French Open | Thomas Muster | 53%
|
| 1977 Australian Open | Vitas Gerulaitis | 48%
|
| 1990 French Open | Andres Gomez | 46%
|
| 1976 French Open | Adriano Panatta | 39%
|
| 1975 U.S. Open | Manuel Orantes | 38%
|
| 1980 Australian Open | Brian Teacher | 37%
|
| 1977 Australian Open | Roscoe Tanner | 35%
|
| 1976 Australian Open | Mark Edmondson | 33%
|
| 1972 French Open | Andres Gimeno | 29%
|