Rookie Bob Tewksbury earned a spot in the Yankees' starting rotation, pitching six shutout innings to extend his streak to 13 scoreless innings and lead New York to a 4-3 victory over the Atlanta Braves yesterday in Fort Lauderdale, Fla.

Tewksbury, 25, gave up four hits, struck out four and walked none in lowering his spring ERA to 1.23. After the game, Manager Lou Piniella called Tewksbury into his office and said: "Congratulations, Bobby, your next start will be the fourth game in New York."

*Red Sox 9, Tigers 5: In Winter Haven, Fla., Mike Greenwell's 11th-inning grand slam powered Boston over Detroit's split squad. Steve Lyons led off the inning with a bunt single, and John Christensen and Dave Stapleton drew walks before Greenwell connected off Randy O'Neal.

*Reds 5, Cardinals 1: In Tampa, Fla., Eric Davis and Ron Oester had two hits apiece and each drove in a run to lead Cincinnati over St. Louis. Davis led off the Reds' first with a homer -- his team-high fifth.

*Braves 9, Dodgers 2: In West Palm Beach, Fla., Rick Mahler and Bruce Sutter allowed eight hits, and Billy Sample knocked in four runs as Atlanta beat Los Angeles.

Mahler went seven innings, allowing two runs and six hits. Sutter, pitching two consecutive innings for the first time since shoulder surgery, allowed two hits, one walk and struck out one.

*Mets 6, Pirates 3: In St. Petersburg, Fla., Rick Aguilera allowed eight hits over six innings, and drove in a run and scored one in New York's five-run second inning.

*Twins 5, Astros 3: In Kissimmee, Fla., left-hander Frank Viola allowed five hits in six innings as Minnesota ended a five-game losing streak and stopped Houston's five-game winning streak.

*Royals 5, Rangers 2: In Pompano Beach, Fla., Jamie Quirk's two-out, three-run homer in the ninth carried Kansas City past Texas. Rangers rookie right-hander Jose Guzman worked seven shutout innings, allowing one hit.

*Blue Jays 6, Phillies 4: In Dunedin, Fla., nonroster outfielder Rick Leach hit a two-run homer in the eighth to break a 4-4 tie and give Toronto the victory over Philadelphia. Leach, trying to make the Blue Jays after being the final cut last year, had his third game-winning RBI.

*White Sox 12, Tigers 8: In Sarasota, Fla., Ron Kittle had three hits, including his second homer this spring, and drove in four runs to help Chicago past Detroit in a split-squad game. Bryan Little and Jerry Hairston also homered for the White Sox. Kirk Gibson hit two for Detroit, giving him six, and Mike Laga hit his eighth.

*Cubs 4, Giants 1: In Mesa, Ariz., Chicago's Rick Sutcliffe struck out eight in six innings and Lee Smith struck out the San Francisco side in the ninth for his third save.

*Brewers 6, Indians 5: In Chandler, Ariz., Jim Gantner and Rob Deer hit two-run singles in a five-run Milwaukee fifth inning against Cleveland. The Brewers stole seven bases, three by Paul Molitor.

*Padres 5, A's 3: In Yuma, Ariz., Mark Thurmond pitched six scoreless innings and Kevin McReynolds and Jerry Royster hit one-run homers for San Diego, which turned four double plays. Oakland had won its preceding five games.

*Angels 8, Mariners 2: In Palm Springs, Calif., Reggie Jackson, Rob Wilfong and Ruppert Jones each drove in two runs to pace California over Seattle. Jackson leads the Angels with 14 RBI.