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Grand Slam Match Wins + Winning Percentage |
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| W/L% in One Year - Open Era (10+ Matches, 90%+) | ||||
|---|---|---|---|---|
| Rank | Player | Year | W-L | Win % |
| 1 | Rod Laver | 1969 | 26-0 | 100.0% |
| 1 | Jimmy Connors | 1974 | 20-0 | 100.0% |
| 3 | Roger Federer | 2006 | 27-1 | 96.4% |
| 4 | Roger Federer | 2007 | 26-1 | 96.3% |
| 5 | Mats Wilander | 1988 | 25-1 | 96.2% |
| 5 | Rafael Nadal | 2010 | 25-1 | 96.2% |
| 5 | Novak Djokovic | 2011 | 25-1 | 96.2% |
| 8 | Roger Federer | 2004 | 22-1 | 95.7% |
| 9 | Bjorn Borg | 1978 | 20-1 | 95.2% |
| 9 | Bjorn Borg | 1980 | 20-1 | 95.2% |
| 9 | John McEnroe | 1984 | 20-1 | 95.2% |
| 9 | Ivan Lendl | 1986 | 20-1 | 95.2% |
| 13 | Bjorn Borg | 1979 | 18-1 | 94.7% |
| 13 | John McEnroe | 1981 | 18-1 | 94.7% |
| 13 | Jimmy Connors | 1982 | 18-1 | 94.7% |
| 16 | Ken Rosewall | 1970 | 13-1 | 92.9% |
| 16 | Jimmy Connors | 1978 | 13-1 | 92.9% |
| 16 | Roger Federer | 2009 | 26-2 | 92.9% |
| 19 | John Newcombe | 1973 | 12-1 | 92.3% |
| 19 | Ivan Lendl | 1987 | 24-2 | 92.3% |
| 19 | Roger Federer | 2005 | 24-2 | 92.3% |
| 19 | Rafael Nadal | 2008 | 24-2 | 92.3% |
| 23 | Pete Sampras | 1993 | 23-2 | 92.0% |
| 23 | Andre Agassi | 1999 | 23-2 | 92.0% |
| 25 | Arthur Ashe | 1968 | 11-1 | 91.7% |
| 25 | Jimmy Connors | 1976 | 11-1 | 91.7% |
| 25 | Yannick Noah | 1983 | 11-1 | 91.7% |
| 25 | Boris Becker | 1989 | 22-2 | 91.7% |
| 29 | Guillermo Vilas | 1977 | 21-2 | 91.3% |
| 29 | Pete Sampras | 1994 | 21-2 | 91.3% |
| 31 | Ken Rosewall | 1971 | 10-1 | 90.9% |
| 31 | Arthur Ashe | 1975 | 10-1 | 90.9% |
| 31 | Bjorn Borg | 1977 | 10-1 | 90.9% |
| 31 | Jim Courier | 1992 | 20-2 | 90.9% |
| 31 | Pete Sampras | 1995 | 20-2 | 90.9% |
| 36 | Bjorn Borg | 1981 | 19-2 | 90.5% |
| 36 | Pete Sampras | 1997 | 19-2 | 90.5% |
| 38 | John McEnroe | 1979 | 9-1 | 90.0% |
| 38 | Boris Becker | 1996 | 9-1 | 90.0% |
| 38 | Goran Ivanisevic | 2001 | 9-1 | 90.0% |