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 .
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.