No relievers available?

With contending clubs such as the Atlanta Braves and Boston Red Sox running into injury problems with their bullpens, one expectation is for them to hit the trade market and seek such a fix. Rob Bradford of WEEI.com asked one executive how that market is looking: "Non-existent," was part of the response.

Part of the reason for a slim-or-none market is that it's May, and with two Wild Card berths in each league, more teams are still within shouting distance. The Braves, however, are in the market for a southpaw, with both Jonny Venters and Eric O'Flaherty out for the year with torn elbow ligaments.

Possibilities include Scott Downs of the Angels and Mariners' southpaw Oliver Perez, both of whom are set for free agency following the season. White Sox lefty Matt Thornton could also be available if the White Sox fail contend beyond the All-Star break.

Among non-lefties that could be shopped include Miami's Steve Cishek, San Diego's Huston Street and Oakland's Ryan Cook and Gran Balfour. The Blue Jays may have a few arms to shop, too, including lefties Darren Oliver and Brett Cecil, as well as closer Casey Janssen.

Few, if any, may be available now, as the executive noted, but as the spring turns to summer next month, that could change.