Eric O'Flaherty (elbow) threw a successful bullpen session in front of Athletics manager Bob Melvin on Saturday.
The A's believe that he could be cleared to face live hitters by the time they return from their next road trip. He remains on track to rejoin the A's bullpen at some point in June, making an already strong bullpen even more dominant.
Pirates optioned C Tony Sanchez to Triple-A Indianapolis.
The 25-year-old backstop acquitted himself well during his brief stay with the Pirates, hitting .333/.333/.389 with four RBI in 18 at-bats. He'll continue to function as organizational depth and will return to the Pirates should they suffer any injuries behind the dish.
Pirates activated C Chris Stewart from the 15-day disabled list.
Stewart is returning from surgery to repair the meniscus in his right knee. He'll function as the primary backup behind starting catcher Russell Martin.
Jason Castro is not in the starting lineup for Saturday's game against the Athletics.
It appears to be just a routine day of rest for the young backstop after a night game on Friday. Carlos Corporan will get the call behind the dish and hit eighth against opposing southpaw Scott Kazmir.
Coco Crisp is not in the Athletics lineup for Saturday afternoon's contest against the Astros.
Crisp has been dealing with a minor hamstring injury, and the A's likely just want to play it cautiously and ease him back into action. Craig Gentry is getting the start in center field and leading off for the A's.
Reds optioned RHP Curtis Partch to Triple-A Louisville.
With Sean Marshall returning to the Reds bullpen on Saturday, Partch become the odd man out. The 27-year-old appeared in three games for the Reds, firing 4 1/3 scoreless innings while posting a 3/3 K/BB ratio. He should get another opportunity with the big league club relatively soon.
Reds activated LHP Sean Marshall from the 15-day disabled list.
The 31-year-old southpaw was deemed good to go after appearing in two games on a minor league rehab assignment with Triple-A Louisville. He'll work in a setup capacity in front of interim closer Jonathan Broxton.
Phillies outfield prospect Carlos Tocci went 3-for-5 on Friday for Low-A Lakewood, bringing his season line up to .271/.271/.305.
It was Tocci's second consecutive three-hit night, and he has gone 11-for-19 over his past four games. Tocci has only hit two extra base hits in 2014 (both doubles), has yet to take a walk, and has struck out 14 times in 13 games. He is spending his second season in Lakewood, but he is the same age as many high school seniors.