Humber to retire after Padres release; Thornton to make team

San Diego Padres starting pitcher Philip Humber throws during the first inning of a spring training baseball game against the Seattle Mariners, Thursday, March 3, 2016, in Peoria, Ariz. (AP Photo/Charlie Riedel)

PEORIA, Ariz. (AP) -- Right-hander Philip Humber has told the San Diego Padres he's retiring instead of accepting a minor league assignment.

Also Tuesday, the Padres told veteran reliever Matt Thornton that he will make the 25-man roster, paid a retention bonus to right-hander Brandon Morrow, released outfielder Skip Schumaker and optioned right-hander Leonel Campos to Triple-A.

Humber threw a perfect game for the Chicago White Sox against Seattle in 2012. But his ERA ballooned to 7.90 a year later with Houston and he hasn't pitched in the big leagues since.

Manager Andy Green said the 33-year-old Humber is ''ready to move on with his family.''

The Padres faced a Tuesday deadline to tell the lefty Thornton whether he made the roster or release him. He signed a minor league deal earlier this month.

Green also announced that right-hander Jon Edwards will start the season on the disabled list with elbow pain.