In Sun City, Bophuthatswana, Jerry Pate sank a 117-yard, across-the-water chip shot to eagle the par-5 ninth hole and regain the lead in golf's richest tournament, the Million Dollar Challenge.

Pate's eagle helped him shoot the lowest round of the four-day tournament, a six-under-par 66, for a 10-under total of 206. Lanny Wadkins had a 68 for a total of 208, while Ray Floyd and Craig Stadler were tied for third at 209.

Spain's Seve Ballesteros, who shared the lead with Pate after the first day and had it by himself after Friday's round, had three straight bogeys in a round of 73. He was tied with defending champion Johnny Miller at 211 . . .

Arnold Palmer and Julius Boros tied for the third-round lead in the PGA Seniors Championship in Palm Beach Gardens, Fla., at two-under-par 214. Palmer had a 73 yesterday and Boros a 70 . . .

Manuel Pinero came up with birdie putts on the final two holes, including a 30-footer on No. 18, to shoot 71 for a 208 total and a one-stroke lead over teammate Jose Canizares and Italy's Baldovino Dassu in the competition for individual honors in the World Cup tournament in Acapulco, Mexico.

In the team competition, Spain held an 11-stroke lead over Italy and the United States at nine-under-par 417. England and Korea followed at 432, with the Phillippines at 435, Scotland and Ireland at 437 and Australia, Mexico and Canada at 439.