Nationals scratch Stephen Strasburg just before start

Rookie sensation Stephen Strasburg was scratched from his scheduled start for the Washington Nationals on Tuesday night because he had problems warming up before the game against the Atlanta Braves.

The right-hander was being examined by a team doctor and “appropriate tests will be taken after that,” including possibly an MRI exam or X-ray, General Manager Mike Rizzo said.

Tulowitzki returns

All-Star shortstop Troy Tulowitzki was activated by the Colorado Rockies after sitting out nearly six weeks because of a broken left wrist.

Tulowitzki was hitless in four at-bats against the Pittsburgh Pirates in his first game back.

Street injured

Rockies closer Huston Street bruised the right side of his abdomen when he was hit by an Ian Stewart line drive in batting practice.

The team said Street was sent home to rest and his availability will be on a day-to-day basis. He was taken off the field in an ambulance and team trainer Keith Dugger said Street passed out two or three times after being hit.

Coghlan sidelined

Left fielder Chris Coghlan of the Florida Marlins has been put on the disabled list after tearing a knee cartilage Sunday while splashing a pie on the face of teammate Wes Helms, who had delivered a game-winning hit against Atlanta.

Bay has concussion

New York Mets left fielder Jason Bay has been diagnosed with a mild concussion, suffered Friday when he crashed into a wall at Dodger Stadium, and is out of the lineup for at least a few days.

Bay, who played Saturday and Sunday, said he felt the effects from the concussion during the trip to New York.

Meche to have surgery

Kansas City Royals right-hander Gil Meche will have surgery on his pitching shoulder that will probably end his season.

Meche, 31, has been on the disabled list since May 29 with what the club described as bursitis in the shoulder.