Oakland's most productive power hitter, Josh Willingham, went on the 15-day disabled list with a strained left Achilles tendon on Thursday, and Chris Carter was recalled from Triple-A Sacramento.

Willingham has a .231 average in 64 games, and is leading the A's in home runs (10) and RBIs (42). He has hit .333 with runners in scoring position, but he's also third in the American League in strikeouts, with 76.

This is Willingham's fifth career stint on the DL.