The Red Sox will acquire reliever Craig Breslow from the Diamondbacks, a source has confirmed. The Angels were also looking at Breslow. Boston will send Matt Albers and Scott Podsednik to Arizona to complete the trade.

The Diamondbacks have pulled pitching prospect Patrick Corbin from his scheduled start for the Triple-A Aces on Tuesday. The decision has lead to speculation that Arizona could include Corbin in a deadline trade.

The Diamondbacks are trying to swing a trade for a frontline starting pitcher, according to multiple sources. The identity of the pitcher is unknown, but Philadelphia's Cliff Lee and Seattle's Felix Hernandez may be the targets. The Mariners have consistently denied that they will trade Hernandez, but they inquired about Arizona's Justin Upton earlier this month, according to a source.

The Diamondbacks have acquired third baseman Chris Johnson from the Astros for two minor-league outfielders. Johnson, 27, is batting .279 with eight home runs and 41 RBIs this season, his third with Houston.

Matt Harvey, a top draft pick in 2010, dazzled in his major league debut Thursday night, holding Arizona to three hits and striking out 11 over 5 1/3 innings in the New York Mets' 3-1 win over the D-Backs.

The Diamondbacks appear unlikely to trade shortstop Stephen Drew following the departure of Ryan Roberts. Arizona sent Roberts to Tampa Bay on Tuesday. Kevin Towers added that there is no proposal out there for Drew "that's going to make us better."

The Diamondbacks traded infielder Ryan Roberts to the Rays late Tuesday night after designating him for assignment hours earlier. Arizona received Double-A infielder Tyler Bortnick from Tampa Bay.

After weeks of speculation and rumors surrounding Justin Upton, Diamondbacks president Derrick Hall says that there's "close to a 100 percent chance nothing happens" between now and the July 31 trade deadline. "I would be completely shocked if anything were to happen in-season," Hall said of Upton. "You have a better chance of moving a star-caliber player like Justin in the offseason, when teams know exactly where they finished and where they're heading, and they can get more creative. "We'll field all proposals and conversations. You never know. But I would be surprised if anything happens in the offseason, either." Upton, 24, has been the subject of rumors since reports surfaced before the All-Star break that the Diamondbacks were willing to entertain trade offers for him.

The Rays have shown interest in Arizona's Ryan Roberts, according to a source. Roberts could play third base for Tampa Bay with Evan Longoria still sidelined and without a true timetable for his return.

The Diamondbacks and Tigers have discussed a trade that would include shortstops Stephen Drew and Jhonny Peralta, according to two sources. However, one source characterized the deal as "a long shot." Arizona is unlikely to exercise their $10 million mutual option on Drew's contract for 2013. The A's and Braves also have a need at shortstop, but a source said there has been no activity with those two teams.