Pro Basketball—In the NBA Eastern Conference final, Boston, at home, won the first two games handily from Detroit. Robert Parish scored 31 points to lead the Celtics past the nervous Pistons 104-91 in Game 1, and Larry Bird scored the same number in Game 2, which Boston took 110-101. The Pistons returned the favor at the Silverdome, winning a fight-marred Game 3 122-104 behind Adrian Dantley's 25 points and Game 4 145-119. Dantley led the winners again, with 32 points. Los Angeles twice outlasted Seattle to stretch its Western Conference final lead to 3-0. James Worthy led the Lakers in both wins. He scored 30 points in Game 2, a 112-104 victory, and added a career-high 39 at Seattle, where L.A. held on 122-121 (page 34).
BOXING—LESLIE STEWART of Trinidad won the WBA light heavyweight title with a ninth-round TKO of Marvin Johnson of Indianapolis, in Port of Spain, Trinidad.
GOLF—JANE GEDDES defeated Betsy King by one stroke to win the LPGA Championship and $52,500, in Mason, Ohio. Geddes finished the tournament, her second major victory, at 13-under-par 275.
Dave Barr shot a 23-under-par 265 to win the Atlanta Golf Classic and $108,000, beating Larry Mize by four strokes.
Chi Chi Rodriguez swept to his third consecutive senior tournament victory, at the Silver Pages Classic, by a three-shot margin over Bruce Crampton, in Oklahoma City. Rodriguez, with a 16-under-par 200, earned $37,500.
HOCKEY—Edmonton roared to a three-games-to-one lead over Philadelphia in the Stanley Cup playoffs. The Oilers won 4-2 and 3-2 on their home rink. In Philly, the Flyers came back with a 5-3 victory, but the Oilers won Game 44-1 (page 26).
HORSE RACING—LEO CASTELLI ($5.20), ridden by Jose Santos, nipped Gone West by half a length to win the $220,600 Peter Pan Stakes for 3-year-olds at Belmont. The colt covered the 1?-mile course in 1:48.
Grecian Flight ($25.60), Craig Perret up, beat Fiesta Gal by 1� lengths to win the $189,300 Acorn Stakes at Belmont. The 3-year-old filly took the first leg of the distaff triple crown by finishing the mile in 1:35[1/5].
INDOOR SOCCER—Defense keyed the winning performances in the opening games of the best-of-seven MISL division finals. In the West, Tacoma led San Diego 5-3 in the third quarter when it went up two men for 44 seconds. The Stars couldn't capitalize, however, and the Sockers scored two late goals to steal a 6-5 victory at the Tacoma Dome. In the East, Cleveland defender Bernie James shut out Dallas scoring wizard Tatu, and two fourth-quarter goals put the Force past the visiting Sidekicks 5-3.
MOTOR SPORTS—AL UNSER SR., driving a March-Cosworth, joined A.J. Foyt as a four-time Indianapolis 500 winner by finishing 4.496 seconds ahead of Roberto Guerrero, also in a March-Cosworth. Unser averaged 162.175 mph over the 2.5-mile oval (page 30).