Four days since his last bullpen session, Clay Buchholz' injury saga continues with no end in sight.

But for now, at least, it appears the Red Sox won't alter their approach to the trade deadline.

Buchholz hasn't picked up a baseball since last Sunday, when he felt lingering discomfort in his balky right shoulder after a bullpen session in Oakland. He wasn't present at the Red Sox' voluntary workout this evening at Fenway Park, although he was hosting a charity bowling event across the street at Lucky Strike Lanes, and he's due to be reexamined tomorrow by team orthopedist Dr. Peter Asnis.

In the best-case scenario, Buchholz is cleared to resume his throwing program, albeit a few steps behind where he left off last Sunday. Worst-case: He will undergo additional testing to determine whether the inflammation of the bursa sac in his right shoulder has worsened. Either way, don't expect Buchholz to pitch again for the Red Sox until August and perhaps not until the end of the month.

"We all want the same thing, and that's Clay getting back on the mound," manager John Farrell said before today's workout. "But along the way, we've got to balance a player's current and long-term health. If it's less than, we don't know how effective he would be. A player's health is first and foremost. We're taking every necessary step along the way to achieve that."

But this, Farrell said, is the bottom line: "We have every intention and hope and outlook that he will resume pitching this season."

As a result, the Red Sox aren't giving any indication that they will step up their pursuit of a starting pitcher before the July 31 deadline to make trades without waivers. Multiple sources have suggested the Sox are monitoring the market for starters, including the Cubs' Matt Garza, but may still be prioritizing other needs, namely the bullpen and possibly third base. Besides, unless the Phillies ultimately decide to trade ace lefty Cliff Lee, a bona fide front-of-the-rotation starter may not be available before July 31.

For Buchholz, the soreness in his shoulder crops up whenever he progresses from aggressively throwing off flat ground to pitching off a mound in the bullpen. After Sunday's setback, he received an additional dose of anti-inflammatory medication, Farrell said.