Royals top Yankees after Rivera tears ACL

* AMERICAN LEAGUE

Mariano Rivera tore a ligament in his right knee before the visiting New York Yankees lost 4-3 to the Kansas City Royals on Thursday night.

The 42-year-old right-hander was carted off the field after twisting his right knee shagging fly balls during batting practice.

Manager Joe Girardi revealed the severity of the injury after the game. Royals team doctor Vincent Key diagnosed a torn ACL after looking at the MRI.

"This is bad, there's no question about it," Girardi said.

Baseball's career saves leader was tracking down a ball hit by Jayson Nix in deep center field when his right knee appeared to buckle a step before the wall. He fell to the warning track and immediately grabbed his right knee, briefly covering his face with his glove and grimacing in pain.

Bullpen coach Mike Harkey was near Rivera when he went down, and he was the first to whistle for help. Girardi was watching batting practice from behind home plate and started running down, cutting across the outfield to get to his closer.

Rivera regularly catches balls during batting practice as a way to keep in shape.

Mike Moustakas had three RBIs for Kansas City.

Indians 7, White Sox 5: Jason Kipnis hit a three-run homer, leading Cleveland at Chicago.

Blue Jays 5, Angels 0: At Anaheim, Calif., J.P. Arencibia hit a three-run homer to lead Toronto past Los Angeles.

* NATIONAL LEAGUE

Nationals 2, Diamondbacks 1: Bryce Harper hit a tiebreaking RBI double in the sixth to lift Washington past visiting Arizona.

Pirates 6, Cardinals 3: Erik Bedard struck out 11, leading Pittsburgh at St. Louis.

Reds 4, Cubs 3, 10 inn.: Scott Rolen hit a sacrifice fly in the 10th to lift Cincinnati past visiting Chicago.

Phillies 4, Braves 0: Joe Blanton pitched a three-hitter to lead Philadelphia at Atlanta.

Marlins 3, Giants 2: Anibal Sanchez tossed seven solid innings to lift Miami at San Francicsco.