• Minor League catcher Dusty Brown, who already missed last year recovering from Tommy John surgery, underwent right shoulder surgery on Friday and will not play the rest of Spring Training.
"There's really no timetable right now, and it had been something bothering him since he got here," said Melvin. "He wasn't in a game because of it. A lot of his drills were cut short, and it just got to a point where he had to have this done. He had Tommy John and now this on top of it. It's been a tough year or so for him."
• Melvin was ejected by home plate umpire Adam Hamari in the seventh inning of Saturday's Cactus League contest with the Rockies for arguing a strike call with Shane Peterson at the plate.
"The first pitch to Peterson I thought was outside and I just said, 'Get em on the plate,'" said Melvin. "And then he called him out, I said, 'You made your point,' and I got thrown out."
Asked if it was his first career Spring Training ejection, the A's manager grinned and said, "Unfortunately not. But it was several years back for much more than that."
• Right-hander Ryan Cook threw his second bullpen of the spring on Saturday morning, tossing 23 pitches without any issues. Cook, who is behind schedule because of shoulder inflammation, is expected to throw a couple of more bullpens before facing hitters and getting into a game.
• Lefty reliever Sean Doolittle pitched another perfect inning on Saturday, his fourth of the spring. He has five strikeouts in that span.
• Non-roster infielder Darwin Perez is finally in camp with the A's, after being held up in Venezuela with visa issues for several weeks. Melvin said the plan is to get him in games "as soon as possible."