Diana Taurasi scored five of her 22 points in overtime, and the Phoenix Mercury went on to a 92-84 victory against the injury-depleted Seattle Storm on Thursday night, clinching home-court advantage for the entire WNBA playoffs.

Cappie Pondexter had 18 points and Le'Coe Willingham added 13 for Phoenix (23-10). The Mercury's win, coupled with Eastern Conference-leading Indiana's 86-79 loss at Chicago, helped guarantee them the top seed in every playoff series.

The Mercury, who scored the first four points of overtime to take the lead for good, have the tiebreaker edge against the Fever based on a better record against Eastern Conference teams (10-4) than Indiana has against Western teams (5-7).

Tanisha Wright scored 24 points to lead the Storm (19-14), who played without All-Stars Lauren Jackson (back), Sue Bird (neck) and Swin Cash. Shannon Johnson and Janelle Burse had 15 apiece. Seattle has already secured second place in the West and will have home-court in the first round.

The Mercury trailed 69-67 with 6:33 left in the game after a Wright's jumper from near the foul line. But Phoenix scored the next six points _ a tip-in by Tangela Smith, two free throws by Taurasi, and a layup by Smith _ for a 73-69 lead.

Seattle tied the score at 75-all on two free throws by Camille Little with 1:25 left. Wright put the Storm ahead on a 10-foot runner with 18 seconds left, but Pondexter tied it at 77 on a short jumper from the right of the hoop with 6.9 seconds to play in regulation.