Ivan Lendl used his powerful serve and steady base line play to overwhelm Jimmy Connors, 6-2, 6-3, and win the $500,000 AT&T Challenge yesterday in Atlanta.

"I felt so good and so loose that I had trouble concentrating," said Lendl, who won $150,000, served 13 aces and numerous service winners in the 91-minute match.

"He was just bombing his serves in there which makes it difficult," Connors said. "When Lendl's on and he's swiping through the ball with winners it's difficult."

Lendl, the world's No. 1-ranked player, ended it on his third match point when Connors hit a forehand wide.

"I can play better and I can get in better shape," Connors said . . .

In London's Royal Albert Hall, two-time champions Heinz Gunthardt and Balazs Taroczy eliminated defending champions Ken Flach-Robert Seguso to reach the final of the $200,000 World Doubles for the fourth time in five years. They'll go for the title today against the Australian Open champion duo, No. 2-seeded Paul Annacone-Christo Van Rensburg, who ended the surprising bid of the wild-card entry, John Lloyd-Peter Fleming.

Reigning Wimbledon doubles champions Gunthardt, 26, and Taroczy, 31, reversed last year's final defeat by winning over the American duo, 7-5, 3-6, 6-3, 7-6 (7-3), in 2 1/2 hours.

Lloyd and Fleming were dismissed, 6-1, 6-2, 6-2, by Annacone and Van Rensburg.