Right-handers Dave Bush, Austin Hyatt and B.J. Rosenberg and left-hander Pat Misch have been reassigned. Infielders Harold Garcia and Cesar Hernandez, outfielder Tyson Gillies, catcher Sebastian Valle and right-hander J.C. Ramirez have been optioned.
The Phillies also outrighted Garcia, who had knee surgery last week, from the 40-man roster, leaving them with 38 players on the 40-man.
Bush, who grew up outside Philadelphia and attended Conestoga High School, allowed four runs and seven hits and struck out four in 5 1/3 innings in three Grapefruit League games. He expressed disappointment he could not stick in big league camp longer, but the Phillies told him they need him to build arm strength to be a starter with Triple-A Lehigh Valley.
"I understand," he said. "I feel good. I haven't had too many chances to pitch yet, but I've felt good when I've been out there. I feel healthy and feel strong, so I'll just keep working from there."
Right-hander Scott Elarton, who is trying to make a comeback after not pitching in the big leagues since 2008, has impressed and is sticking in big league camp for now, although he also is expected to open the season in Lehigh Valley.
Todd Zolecki is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.