Russian second seed Maria Sharapova has reached the semifinal round of the Nasdaq-100 Open men's and women's tennis tournament in Key Biscayne, Florida.

Sharapova prevailed, 6-1, 6-7, 6-2 Tuesday after a gallant comeback by Justine Henin-Hardenne of Belgium. Sharapova failed to convert three match points in the second set. The Wimbledon champion closed out the victory an hour later.

Tennis: Sharapova Reaches Semi-Finals of Nasdaq-100

Advancing to the men's quarterfinals was six-time Key Biscayne winner Andre Agassi. He beat French Open champion Gaston Gaudio, 7-6, 6-2.

Tennis: Sharapova Reaches Semi-Finals of Nasdaq-100

Two Spaniards advanced to the men's quarterfinals. Rafael Nadal beat 13th-seeded Ivan Ljubicic of Croatia, 6-4, 6-7, 6-3. Unseeded David Ferrer rallied past countryman Juan Carlos Ferrero, 6-7, 6-3, 7-5. Dominik Hrbaty of Slovakia eliminated Gael Monfils of France, 6-3, 6-3.

Tennis: Sharapova Reaches Semi-Finals of Nasdaq-100