BASKETBALL—BOSTON and LOS ANGELES, playing nip and tuck through a week of NBA finals, wound up in Boston Saturday with the balance 3-2 in favor of Los Angeles. Earlier, in L.A., Jerry West had scored a winning basket at the final buzzer to give the Lakers their second victory of the playoffs, 117-115. The Celtics evened things the next night, taking command early and coasting to a 115-103 win that left the series at 2-2. Then, back in Boston, Elgin Baylor scored a record 61 points, breaking Wilt Chamberlain's not-quite-month-old mark of 56 points in a playoff game, as Boston made a tactical slip by concentrating its defense on West. Los Angeles won, 126-121, and the teams flew westward again for the sixth game.
BOWLING—JOE JOSEPH of Detroit captured $5,000 and his first major victory in 22 years of bowling by winning the $25,000 St. Louis PBA tournament with a final 217-204 game against Harry Smith of St. Louis. In a previous round Smith, who was qualifying leader, broke the PBA record for 25 games with 5,633 pins.
BOXING—INGEMAR JOHANSSON, Sweden's former world heavyweight champion now trying for a comeback to earn another chance at the title, knocked out Wim Snoek of Holland in the fifth round of a scheduled 10-round match at Stockholm. Snoek floored Johansson for a count of five in the first round, but the former titleholder broke out a long left and a right hook to give Snoek his second KO in 65 matches.
Guy Sumlin, a welterweight from Pritchard, Ala., cut British champion Brian Curvis above the right eye to score a TKO in the eighth round of a scheduled 10-round bout.
COURT TENNIS—YALE, with eight round-robin victories over Princeton's six and Harvard's lone win, took the intercollegiate invitational title in New York. Yale's Ogden Phipps Ill. the collegiate singles champion, was awarded the Van Alen Trophy for best player of the tournament.
DOG SHOW—CH. TOUCHSTONE'S CRUSADER, a miniature black poodle with limited show experience but well handled by Anne Hone Rogers, took best-in-show honors over 941 other entries in the Twin Brooks Kennel Club judging in West Orange, N.J. The 4-year-old is owned by Frederick P. Dyckman and Charles F. Knapp of Fishkill, N.Y.
GOLF—BILL CASPER of Apple Valley, Calif. came from three strokes behind in the last nine of the 535,000 Greater Greensboro ( N.C.) Open to win by one shot over Mike Souchak, defending champion. They were tied going into the last round, but Casper took first-place money of $5,300 with a final 68 and a four-round total of 275. Sam Snead, who had won the tournament seven times, came in third with 278, and Masters Champion Arnold Palmer finished in a tie for fifth with 284.
HARNESS RACING—IRVIN PAUL ($9.20), a 5-year-old gelding nicely driven by Charles King, moved into the lead just before the half-mile mark of the $25,000 Adios Butler Trophy free-for-all pace at Roosevelt Raceway, to finish the mile in 2:02 4/5, three-quarters of a length ahead of Stephan Smith, handled by Gene Sears. Caduceus, the New Zealand-bred 12-year-old and the favorite, was third in the field of eight top pacers.
HOCKEY—TORONTO started off the Stanley Cup finals as expected, taking the first two games on home ice 4-1 and 3-2, and thoroughly outskating a listless Chicago team. But back in Chicago the Hawks held the Leafs scoreless 3-0, as Glenn Hall registered his fourth shutout in Stanley Cup play. With the Leafs ahead 2-1 in the series, the teams stayed in Chicago for the fourth game.
HORSE RACING—HITTING AWAY ($9), with Bob Ussery up, finished the $28,550 Excelsior Handicap at Aqueduct three-quarters of a length ahead of Darby Dan Farm's Up Scope, covering the mile and ? in 1:50. Ogden Phipps's colt ran his own race all the way, leaving Manassa Mauler in third place, Hillsborough fourth and his co-favorite, Ambiopoise, fifth.