Florida Marlins pitcher A.J. Burnett would be receptive to signing a long-term contract with the Orioles if Baltimore made a strong push for the right-hander, according to his agent, though several sources say they have not yet engaged in any serious trade talks.

Sources confirmed Burnett is on the market despite the fact that Florida is still in contention in the National League East. One baseball source said the Boston Red Sox inquired about Burnett on Tuesday.

"After an extension wasn't signed in spring training, we knew this scenario was likely," said Darek Braunecker, Burnett's agent.

Baltimore is a destination Burnett would accept because his wife is from the area.

"We certainly would discuss the Orioles or other clubs that lie in that geographical region," Braunecker said.

Kline Under Scrutiny

Major League Baseball is investigating Steve Kline's actions that led to his ejection from Monday's game and the reliever's postgame comments when he accused umpires of favoring the New York Yankees. Kline erupted after being called for a balk in the eighth inning of Baltimore's 6-4 loss.

"Any incident that leads to an ejection MLB investigates," said Patrick Courtney, vice president of public relations for baseball. "It's fair to say we're looking into this as we do in all other cases where a player is ejected. The quote surrounding that will be part of that as well." Courtney said a decision on Kline may come on Wednesday. . . .

Pitcher Bruce Chen threw a bullpen session on Tuesday, but it is becoming more likely that he'll miss at least one start because of a strained left toe.