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A grand slam is 4 runs. 3 base runners and the hitter himself get to cross home plate.
Lou Gehrig hit 23 career grand slam home runs, the most by any player in Major League Baseball history.
"Four Runs Scored on a Grand Slam" (in baseball).
GRand SLam
4 runs
1950's to 1960's.
Lawn tennis ,baseball
14 grand slam singles
The four major tennis tournaments; the US Open, the Open Championships(wimbledon), Roland Garros (French Open), and the Australian Open are known as the Grand Slam of tennis. Hitting a grand slam in baseball scores four runs and is the greatest accomplishment a baseball player can achieve during one at bat. Likewise, winning the Grand Slam of tennis involves winning four tournaments and is considered the greatest accomplishment in tennis. Because "tournament which makes up part of the Grand Slam of tennis" is so long it is usually shortened to "Slam".
Greg Rusedski has never won a Grand Slam Event.
Don Budge has won 6 Grand Slam Singles Titles.