Alex Rodriguez usually delivers hard hits. On this occasion, he absorbed one.
The Seattle shortstop sustained a concussion while trying to break up a double play Friday night, leaving his status in doubt for the All-Star game.
''There's no way to speculate in the next 24 to 48 hours,'' Mariners trainer Rick Griffin said after a 3-2 loss to Los Angeles in 11 innings. ''We're going to have to see how Alex feels.''
Rodriguez is supposed to start for the AL on Tuesday night at Turner Field in Atlanta.
Sliding in, Rodriguez was caught flush in the left side of the head by Dodgers shortstop Alex Cora's knee. Rodriguez was motionless on the ground for several minutes, helped to his feet and taken to a Seattle hospital.
Rodriguez he had a CT scan and neurological tests and was to remain in the hospital overnight for observation. He was to have more tests Saturday.
Griffin said he did not think Rodriguez was knocked out, but added, ''He was saying some funny things. He was talking about high school football.''
Rodriguez played with Cora's brother, Joey, with the Mariners from 1995-98. Alex Cora, who tried to jump out of the way, applauded Rodriguez's effort.
''It's awesome from the standpoint that it is a superstar like him,'' Cora said. ''He gives everything for his team.''
Interleague action returned and, for the most part, great defense and good pitching ruled.
Paul O'Neill and Barry Larkin turned in game-saving plays, Mike Mussina and Tom Glavine took over on the mound.
O'Neill made the play of the day, reaching over the right-field wall at Shea Stadium to rob Derek Bell of a tying home run in the eighth inning. The New York Yankees held on to beat the Mets 2-1 in the opener of the Subway Series.
''A lot of the games haven't lived up to what you guys wanted,'' O'Neill said. ''This one did.''
At Cinergy Field, Larkin took part in a perfect relay that cut down the potential run at the plate for the final out as the Reds beat the Cleveland Indians 2-1.
''I knew we had time,'' the All-Star shortstop said. ''It really was just routine.''
Mussina struck out 10 and outdueled Curt Schilling as the Baltimore Orioles won at Philadelphia 2-1.
Glavine, a Massachusetts schoolboy star, shut out Boston until the eighth inning as the Atlanta Braves beat the Red Sox 5-3 at Fenway Park.
In other games, the Chicago White Sox downed the Chicago Cubs 4-2 in 12 innings, Oakland defeated Arizona 5-4 in 11 innings, Anaheim beat Colorado 12-4, Texas stopped San Diego 5-4 in 10 innings, Montreal beat Toronto 10-5, Houston defeated Kansas City 9-5, Tampa Bay stopped Florida 8-3, Milwaukee downed Detroit 4-3 and Pittsburgh beat Minnesota 8-6.
In the National League, San Francisco beat St. Louis 4-2.
Dodgers 3, Mariners 2, 11 innings
Eric Karros hit his 22nd career interleague home run, connecting with one out in the 11th inning off Arthur Rhodes.
Karros has 25 homers this season, two of them winning shots in extra innings.
Rickey Henderson moved into sole possession of second place in career walks with 2,020, one more than Ted Williams. Babe Ruth is first with 2,062.
Yankees 2, Mets 1
Orlando Hernandez stopped the Mets for eight innings, helped by O'Neill's catch, and the Yankees beat All-Star Al Leiter.
On Saturday, the teams will play a day-night doubleheader -- they start out at Shea Stadium and finish up at Yankee Stadium.
White Sox 4, Cubs 2, 12 innings
Frank Thomas singled home the go-ahead run in the 12th inning, then caught Sammy Sosa's liner and stepped on first base to double up Mark Grace and give the White Sox a win at Wrigley Field.
The White Sox won for the 24th time in 31 games. The Cubs had a great chance in the 11th, but third baseman Herbert Perry made a diving stop and threw out Ricky Gutierrez from his knees to strand a runner at third base.
Reds 2, Indians 1
Denny Neagle, who could wind up in Cleveland before the July 31 trading deadline, pitched eight shutout innings as Cincinnati beat the visiting Indians.
The Indians put two runners on base in the ninth, and pinch-hitter Russell Branyan doubled. Roberto Alomar scored, but Travis Fryman, trying to make it home from first base, was thrown out on the relay from left fielder Alex Ochoa to Larkin to catcher Benito Santiago.
Orioles 2, Phillies 1
Albert Belle hit a tiebreaking single in the sixth inning and Mussina made it stand up.
Mussina pitched eight innings and won for the first time since June 16. Schilling struck out eight in a complete game.
Braves 5, Red Sox 3
Andres Galarraga hit his 20th homer in a five-run second inning as Atlanta beat Boston.
Glavine gave up six singles, three by Jose Offerman, in 7 2-3 innings. He won his second straight start after going 0-4 in his previous seven outings.
Athletics 5, Diamondbacks 4, 11 innings
Ryan Christenson homered in the bottom of the 11th inning, lifting Oakland over Arizona.
Christenson connected with one out against Omar Daal, ending the Athletics' three-game losing streak and stopping the Diamondbacks' three-game winning string.
Devil Rays 8, Marlins 3
Fred McGriff hit two solo home runs against Ryan Dempster and Bubba Trammell drove in three runs as Tampa Bay won at Florida.
McGriff has 406 home runs, tying him with Duke Snider for 30th on the career list.
Dempster, the Marlins' representative in the All-Star game, struck out 11 in 6 2-3 innings.
Expos 10, Blue Jays 5
Jose Vidro, about to appear in his first All-Star game, hit a pair of RBI doubles as Montreal beat visiting Toronto.
Vidro leads the NL with 31 doubles and is batting .379. The Expos won their third in a row.
Brewers 4, Tigers 3
Jeromy Burnitz homered, drove in three runs and made a diving catch to end the game as Milwaukee defeated Detroit.
Tigers manager Phil Garner returned to County Stadium, where he guided the Brewers for nearly eight seasons until being fired last Aug. 12.
Burnitz preserved the victory by grabbing Brad Ausmus' fly ball to right field with a runner on first base.
Astros 9, Royals 5
Houston stopped its six-game home losing streak, its longest since 1995, as Scott Elarton beat Kansas City.
The Astros have won only four of 17 games, and Elarton has been the winning pitcher in each of those victories.
Jeff Bagwell, Craig Biggio and Mitch Meluskey homered for Houston.
Rangers 5, Padres 4, 10 innings
David Segui singled home the winning run with two outs in the bottom of the 10th inning as Texas defeated San Diego.
Ivan Rodriguez hit a grand slam for the Rangers, who won their fourth in a row. Texas won its first extra-inning game in five tries this season.
Angels 12, Rockies 4
Troy Glaus homered twice and rookie Bengie Molina hit his first major league grand slam as Anaheim sent visiting Colorado to its fifth straight loss.
Glaus, headed to his first All-Star game, was in a 1-for-29 slump before connecting twice. He tied Leon Wagner for most homers (25) ever by an Angels player going into the break.
Giants 4, Cardinals 2
Rich Aurilia singled home the tiebreaking run in the eighth inning and San Francisco won its seventh in a row.
J.T. Snow homered and Ellis Burks had three hits as the Giants won for the 17th time in 24 games. They are 6-0 with Barry Bonds sidelined by a hairline fracture in the tip of his right thumb.
Jim Edmonds hit his 25th homer for St. Louis. A sellout crowd at Busch Stadium saw the Cardinals play without Mark McGwire, who had tendinitis in his right knee.
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