Pedro Martinez slowly walked off the mound. The New York Mets have no idea how long before he'll return.

Robert Andino's first career home run with two outs in the 10th inning gave the Florida Marlins a 5-4 win over the Mets on Tuesday night after Martinez departed with a leg injury.

Already coming off two injury-plagued seasons, Martinez limped away with a strained left hamstring in the fourth inning, after just 57 pitches.

"He said he felt kind of a pop," Mets manager Willie Randolph said.

Martinez, who was not available for comment, will fly back to New York today for an MRI. He left before the game was over, meaning he didn't see Andino's homer — which would have made him feel even worse.

"As far as Pedro going down, I feel bad for him, obviously," said Mets catcher Brian Schneider, who had three hits. "He's a big part of this team, but what's done is done."

Martinez hit Hanley Ramirez on the left elbow to open the game, and Dan Uggla followed with a two-run homer. The lead swelled to 4-0 in the second after Luis Gonzalez hit a leadoff homer and Ramirez's triple to center drove Alfredo Amezaga home easily.

But the real trouble for Martinez arrived without warning in the fourth.

He retired Matt Treanor on a ground out and was clearly in discomfort after the pitch, grabbing both his midsection and lower back region. Randolph and team medical officials rushed to the mound, talked momentarily with Martinez, then shuffled with him back to the dugout.

"We weren't going to mess around," Randolph said.

Martinez, entering the final season of a $53 million, four-year contract, went on the disabled list twice in 2006 with right hip inflammation and a strained right calf. That September, he was diagnosed with a torn rotator cuff, had surgery and didn't pitch in the majors for nearly 11 months.

But he went 3-1 in five starts late last season and was problem-free this spring — giving the Mets hope that Johan Santana and Martinez would be a powerful 1-2 atop their rotation.

Now, that's in question.

"We'll see how it plays out," Randolph said.

Chicago: Nothing obstructed the view of Wrigley Field on Monday from a pair of rooftop clubs whose owner has refused to share 17 percent of his profits with the team. But if Tom Gramatis hasn't paid up by the time the Cubs return home April 15, team officials said obstructions will be installed. Cubs vice president Mike Lufrano said the team hopes it won't have to do that, but that it's unfair to other rooftop partners to let one rooftop get away without paying. Gramatis could not be reached for comment. Four years ago, the Cubs and the rooftop owners struck a deal after a dispute that saw the team put up wind screens to obscure their views. Rooftop owners agreed to pay the Cubs 17 percent of their gross revenues for the next 20 years.

Los Angeles: Third-base coach Larry Bowa was ejected in the sixth inning, apparently for arguing after he was told to stay within the boundaries of the coaching box. The Dodgers had two on and two outs in a scoreless game when third-base umpire Larry Montague gestured to Bowa. The two came together, the discussion got heated, and Bowa was tossed. Bowa had to be restrained by manager Joe Torre and bench coach Bob Shaefer before leaving the field. Once in the dugout, the fiery former manager turned over a bucket of Gatorade.

Philadelphia: RHP Rudy Seanez agreed to a contract with the Phillies. Seanez is expected to be in the lineup today against Washington.

St. Louis: The Cardinals have lost consecutive openers for the first time since 1996-97.

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