Breslow, who threw 28 pitches without a glitch in a Minor League game on Wednesday, is scheduled to throw again in a similar setting on Saturday, putting him in line to make his Cactus League debut early next week if all continues to go well.
The A's lefty has been nursing a strained hamstring for more than a week, though he's remained on track with his pitching schedule during a spring in which the A's have brought him along slowly following a 2010 campaign that saw him rack up 74 2/3 innings in relief.
Devine, meanwhile, felt good Thursday while throwing 10 pitches from flat ground and 20 from the top of the mound. Pitching coach Ron Romanick said he liked what he saw from the righty, who has been set back with biceps tightness, and mentioned Devine will likely undertake a bullpen session before returning to game action.
Devine's stiff arm greatly affected his mechanics during his last two spring outings, and his command was subsequently missing entirely, as evidenced by the eight walks he's offered up in just 4 1/3 innings. He's looking to join the bullpen ranks after missing two seasons following Tommy John surgery, though it's unclear whether he'll be available on Opening Day.
"We're trying to be patient with him and do things right," Romanick said. "Everyone's schedule is different, but I can tell you it was great to see what he did today. He's on the right track again."