Uehara's Opening Day status up in the air

Needing more prep before season, Red Sox closer remains out of game action with tight hamstring

Uehara's Opening Day status up in the air

JUPITER, Fla. -- Four days after John Farrell stated that he "fully" expected closer Koji Uehara to be ready for Opening Day, the manager sounded far less certain as he spoke to reporters before Tuesday's game against the Marlins.

"I think with each passing day he's not in a game, there's growing concern, concern in the sense, 'Will he be ready for April 6?' And we're just working through that," said Farrell.

Uehara, who has been limited to three outings this spring because of right hamstring tightness, last pitched in a game on March 14.

When he first suffered the injury, Uehara said that he could be ready for the season without pitching in any more Grapefruit League games. But that doesn't seem like a realistic scenario.

"I think it's important to see him in games, to evaluate the stuff," said Farrell. "[And] for Koji himself to understand what he has in the moment and what he goes to the mound with from a physical standpoint."

If Uehara misses time at the start of the regular season, Edward Mujica is the most likely candidate to get save opportunities.

The original plan was for Uehara to throw a bullpen session mid-week. But that has now been pushed back to "later this week," according to Farrell. And there is no schedule yet for Uehara to pitch in a game.

Uehara played long toss again on Tuesday.

Ian Browne is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.