Pedro Baez, Joel Peralta and Brandon League rehab at Triple-A Oklahoma City.

Three Dodgers pitchers began rehab assignments with Triple-A Oklahoma City.

Right-hander Pedro Baez started for Triple-A Oklahoma City and pitched a scoreless inning in his first rehab assignment since straining his right pectoral muscle in May. Baez struck out one of the four batters he faced.

Right-hander Joel Peralta faced five Memphis Redbirds batters in the second inning. He allowed two hits, one run and struck out one.

Right-hander Brandon League retired two of the five batters he faced in the third inning. He walked two batters, allowed one run and struck out one.

The box score is here.

Brandon Beachy’s comeback trail begins at Rancho Cucamonga.

Brandon Beachy‘s long-awaited return to the mound finally arrived. The right-hander started and pitched 1 ⅔ innings Tuesday for Single-A Rancho Cucamonga, his first rehab game since undergoing a second Tommy John surgery last spring.

Beachy allowed one walk and struck out one of the six batters he faced. This was the first day of 30 he will have to complete the minor-league rehab assignment. He’s expected to use all 30 days.

Brandon League also appeared in the game, his first back-to-back appearances since beginning his rehab from a spring shoulder injury. League allowed one hit and struck out one batter in a scoreless third inning.

Beachy will probably remain at Single-A for now, while League is expected to join Triple-A Oklahoma City before returning to the Dodgers in a week.

Brandon Beachy will begin minor-league rehab assignment in Rancho Cucamonga tonight.

Brandon Beachy

Brandon Beachy will make his first minor league rehab appearance tonight with Single-A Rancho Cucamonga, a 7 p.m. home game against the High Desert Mavericks. (Getty Images)

Brandon Beachy will begin his long-awaited minor league rehabilitation assignment tonight with Single-A Rancho Cucamonga. Beachy, whom the Dodgers signed to a one-year deal with an option for 2016 in February, hasn’t pitched in a competitive major-league game since 2013. His career was derailed by two Tommy John surgeries, but at age 28 is nearing a return to the majors.

Beachy’s rehab assignment can last 30 days from start to finish, unless he has a setback that requires him to take some time off. Thirty days from now projects to a return just after the All-Star break. The Dodgers begin the second half with a road trip to Washington, Atlanta and New York starting July 17.

Who knows what the Dodgers’ rotation will look like by then. Beachy has a 3.23 ERA in 46 career starts, all with the Atlanta Braves from 2010-13.

Dodgers pitcher Brandon League (shoulder) is expected to make a relief appearance in the game for Rancho Cucamonga as well.

Update (1:40 p.m.): Beachy will start and pitch two innings.