Umpire injured by broken maple bat

Plate umpire Brian O’Nora was hit in the head by a shattered piece of Miguel Olivo’s broken maple bat Tuesday night in Kansas City, Mo., sending blood streaming down his face and forcing him out of a game between the Colorado Rockies and Kansas City Royals.

O’Nora was injured in the bottom of the second inning when Olivo’s bat snapped on a groundout to shortstop. With blood pouring down his face, O’Nora rushed to Kansas City’s dugout, where Jose Guillen quickly covered the umpire’s head with a towel.

O’Nora came out of the game and was treated by Kansas City trainer Nick Swartz. The Royals later announced that the umpire had a small cut on his forehead and was taken to St. Luke’s Hospital for further evaluation.

After the Royals’ 7-3 victory, Olivo confirmed that the shattered bat that struck O’Nora was made of maple. The Kansas City designated hitter said he switched to an ash bat for the rest of the game.

Earlier in the day, Major League Baseball said it will start testing bats following Tuesday’s meeting of a player-management safety committee, but the sport made no decision on the contentious issue of banning maple models.

“They are very, very dangerous. I’m surprised that this is the first incident we’ve seen,” Royals manager Trey Hillman said. “It could have been worse, a lot worse. It looked a lot worse than it was. There was a lot of blood. My understanding is that he is OK.”

Some say maple bats splinter with greater force than bats made of ash, and commissioner Bud Selig said last month that shattering maple bats are “a source of concern for me.”

“Sometimes they shatter even when guys square up on the barrel,” Hillman said. “Sometimes they shatter, more often than not, when they are jammed.”

Selig has not said whether the sport would consider a ban on maple bats or regulating the thickness of handles. The commissioner can’t ban maple bats unilaterally because their use is a term and condition of employment and subject to collective bargaining.

Clearing the bases

The Detroit Tigers activated Gary Sheffield from the disabled list. He was sidelined with an oblique strain on his left side. … The Astros placed second baseman Kaz Matsui on the 15-day disabled list because of a strained right hamstring. … Red Sox first baseman Kevin Youkilis was sent to an eye specialist after getting hit in the face by a one-hop throw in practice, and sat out the game against Arizona.