The fundraiser for earthquake victims on Sunday -- a brainchild of Federer and dubbed "Hit for Haiti" -- came on the eve of the Australian Open and raised more than $185,000, an amount that organizers expected would increase.
Federer, who has won a record 15 Grand Slam titles, teamed up with reigning Australian Open champion Williams and Australia's Lleyton Hewitt and Samantha Stosur. Their opponents were 2009 winner Rafael Nadal, 2008 winner Novak Djokovic, Roddick and U.S. Open champion Kim Clijsters.
The players wore microphones on the court, adding to the entertainment of a mixed-doubles match featuring player substitutions. Commenting as they lunged, lobbed and smashed, they displayed their athleticism and personalities.
There was the eloquent and debonair Federer as master of ceremonies for the match he conceived and helped organize a day earlier. There was the good-natured Clijsters cracking jokes, the playful Nadal with his sideways grin and the wisecracking Roddick.
To the delight of the crowd, Roddick mocked Williams' infamous meltdown at the U.S. Open, when a line judge called her for a foot fault during a crucial point in her semifinal loss to Clijsters.
"Did you really call a foot fault on me in a charity match?" Roddick reprimanded a line judge. "You realize Serena's over there, right?"
The camera panned to Williams sitting on the sidelines shaking her head and laughing, as the packed 15,000-seat stadium roared in laughter. Williams has been touchy on that subject since her arrival in Australia last week -- the profanity-laced, finger-pointing tirade cost her a record fine of $82,500.
Federer tried three times to show off the shot from his U.S. Open victory against Djokovic that he has described as the greatest of his life: a between-the-legs, back-to-the-net winner from the baseline. On Sunday, it worked once and hit the net twice.
Djokovic displayed his powerful serve, acing Williams on one point and prompting her to comment: "You look really good acing girls."
Seats cost about $9.25 -- a fraction of the normal price for a Grand Slam match -- and fans lined up from early morning, waiting hours to get tickets for the afternoon exhibition.
"It was electric in there," said Melbourne resident Helen Forrest. "This was just really fun and a really good way to see the other side of the players."