The top three seeds made light work of their opponents at the Bausch and Lomb Championships on Friday as Justine Henin-Hardenne, Lindsay Davenport and Jennifer Capriati all cruised into the last four.
They were joined by 10th seeded Russian Elena Dementieva, who also enjoyed an easy win over fourth seed Daniela Hantuchova of Slovakia.
The top-seeded Henin-Hardenne had the most difficult time, needing 80 minutes to defeat sixth seed and former champion Monica Seles 6-2, 6-4.
Henin-Hardenne, who defeated the American for the third straight time after losing their first four encounters, arrived at the event fresh from a victory over world number one Serena Williams -- her first loss of the season -- in the final of the Family Circle Cup last Sunday.
It was the second title of the year for the 20-year-old Belgian, who takes on Dementieva in Saturday's semi-finals.
A dominant Dementieva needed just 46 minutes to oust an error-prone Hantuchova 6-0, 6-1.
By reaching her second semi-final of the season, Dementieva took advantage of 28 unforced errors to beat the 19-year-old for the fifth time in seven meetings.
Davenport breezed through a 6-1, 6-1 romp over seventh seed Patty Schnyder in a minute less than it took Dementieva to advance.
The second-seeded American was practically perfect in maintaining her dominance over Schnyder, recording 32 winners with only eight unforced errors in her sixth win in their seven matches.
In her three matches this week, Davenport has dropped just five games.
Davenport will square off against fellow American and third seed Capriati, who crushed 12th seed Lisa Raymond 6-2, 6-0 in a night match.
Capriati's is running into good form after struggling with eye problems earlier in the year after having off-season surgery to remove sun spots.
She has advanced to at least the semi-finals in four straight tournaments.
Davenport is 8-2 lifetime against Capriati, winning their last meeting in three sets at Indian Wells last month.