INDIANAPOLIS (AP) _ Marie Ferdinand had 25 points and 10 rebounds, and made the game-winning layup with 39 seconds left as No. 20 LSU overcame a 16-point deficit to beat No. 6 Purdue 62-55 Saturday.

After a sluggish first half, Ferdinand took over in the second, making seven of her 12 shots and scoring 20 points.

The Boilermakers (8-3) appeared to have busted the game open with a 20-2 first-half run, and a 34-21 halftime lead. But the Lady Tigers (6-3) continued to chip away at the lead.

Their defense also did a good job of shutting down Purdue's two leading scorers _ Katie Douglas and Camille Cooper. Douglas was averaging 16 points and Cooper 14, but they were held to four and seven, respectively.

Purdue led 41-33, but LSU went on a 12-4 run, with six of those points from Ferdinand, and the score was tied 45-45.

Purdue's Shereka Wright answered that run with 3-pointers on consecutive possessions. They were her first two 3-pointers of the season. The lead bounced back and forth until it was 55-55 with 2:43 left.

It remained that way until Ferdinand's layup.

Erika Valek scored 13 points and Wright had 11 for Purdue, which got 11 rebounds from Cooper.

The Lady Tigers had been 5-0 against unranked teams and 0-3 against ranked ones.