GRAND
SLAM HISTORY
Reference Book. 1877 - 2024
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HISTORY
WINNERS
GRAND SLAM
ATP
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OLYMPICS
PLAYERS
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TENNIS HEADLINES
WTA Tour
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WTA 1000
WTA 500
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WTA TOURNAMENTS IN PAST
WTA CIRCUIT IN PAST
WTA Tier I
From 1988 to 2008, all WTA tournaments were divided into five levels. The WTA Tier I category was the most prestigious and the most lucrative in the world women's tennis.