CHARLOTTE, N.C. (AP) _ The Charlotte Sting on Friday traded Rhonda Mapp to Houston for Kara Wolters, who is out with a knee injury.

The Sting made the deal to strengthen their size and strength underneath the backboards, according to coach Marynell Meadors.

The 6-foot-2 Mapp, a former North Carolina State star, was Charlotte's starting center for the first five games this season, before sitting out the sixth game with the flu. She played just seven minutes in the Sting's 68-63 loss to Washington on Wednesday.

The 6-7 Wolters, a star at Connecticut, has been out since June 21 with a right knee injury. She was expected to miss four weeks.

Wolters was Houston's third-round pick in the 1999 WNBA Draft after she played two seasons in the now-defunct ABL. In 57 career games in the ABL, she averaged 10.1 points and 5.2 rebounds while shooting 54.7 percent from the floor.

Mapp averaged 11.6 points and 5.5 rebounds during the inaugural WNBA season and 10.1 points and 4.3 rebounds last season. She was averaging just 5.9 points and 3.7 rebounds per game this season.

``Rhonda has been a big part of our success over the past three seasons,'' Meadors said. ``But the makeup of the league has changed in terms of the size and height of players in the post.

``Rebounding has been an Achilles' heel of sorts for us this season and having Kara as a presence in the middle will help us shore up that aspect of our game. Kara is also an active shot-blocker and a fine offensive player in the low post.''