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

The Padres on Tuesday also told veteran reliever Matt Thornton he will make the 25-man roster, paid a retention bonus to right-hander Brandon Morrow and released outfielder Skip Schumaker.

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.

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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 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.