Madson has been out since April 29 after breaking his right big toe kicking a metal chair following a blown save against the Giants. He had surgery on the toe shortly thereafter and has pitched in five rehab games between Class A Clearwater, Double-A Reading and Lehigh Valley, compiling a 3.91 ERA in 5 2/3 innings on four hits and five walks.
"It felt like a mini Spring Training," Madson said. "I was just itching to get back into some real situations and stick with what I've been working on just mechanically. Hopefully I can go out there and not think about it too much."
Madson is 1-0 with a 7.00 ERA and four saves for Philadelphia this season. Phillies manager Charlie Manuel said he will slide back into the setup role for the team's closer Brad Lidge.
"It helps us a lot," Manuel said. "It's a big help."
Zagurski, a 26-year-old left-hander, had no record with a 3.38 ERA in five games for the Phils.
"He's got talent," general manager Ruben Amaro Jr. said. "He just needs to be more consistent. We like Mike a lot."
To make room for Madson on the 40-man roster, outfielder Quintin Berry was designated for assignment.
Zach Schonbrun is an associate reporter for MLB.com This story was not subject to the approval of Major League Baseball or its clubs.