Angels add much-needed lefty pitcher Joe Thatcher

The addition of Joe Thatcher adds a second lefty to a bullpen that at one time had none.

Matt Kartozian

The Angels added another much-needed left-hander to their bullpen on Saturday, acquiring Joe Thatcher and outfielder Tony Campana from the Arizona Diamondbacks.

In exchange, the Angels sent two minor leaguers, outfielder Zach Borenstein and right-handed pitcher Joey Krehbiel, to Arizona.

The addition of Thatcher adds a second lefty to a bullpen that at one time had none. Thatcher joins Michael Roth, who was called up to replace Salt Lake-bound Cory Rasmus. Rich Hill, who was acquired from the Boston Red Sox on Tuesday, was designated for assignment.

Thatcher, 32, had a 1-0 record and 2.63 ERA in 37 games with the Diamondbacks this season. His 8.33 strikeouts-to-walks ratio (25 strikeouts, three walks), ranks second in the National League behind the Dodgers’ Clayton Kershaw (9.73). He also has a streak of 23 consecutive appearances (13.1 innings) without walking a batter.

"I think we’re trying to get balance in our bullpen and he’s a guy that has really matched up well against lefties," Angels manager Mike Scioscia told reporters on Saturday. "(Our bullpen) keeps evolving and making strides and we’re getting better down there, but this will be a big piece that will definitely take the load off of some guys that have been pitching a lot."

Thatcher spent his first six seasons with the San Diego Padres and has 10 career saves.

Campana, 28,was optioned by the Angels to Triple-A Salt Lake. He spent this season splitting time between Arizona and Triple-A Reno. In two stops with the D-Backs, he hit .150 (9 for 60) with one double, one triple and three RBIs in 26 games.

"We feel like between now and Sept. 1, (Tony) provides us with depth and provides us with an exceptional base stealer," said Angels GM Jerry Dipoto. "As a defensive extra in the outfield, he can really run the bases."

Borenstein 23, hit .260 with seven homers and 50 RBIs at Double-A Arkansas and Salt Lake. Krehbiel, 21, had five saves and a 2.00 ERA at Burlington and Inland Empire, both Class A teams.