Chicago Cubs catcher Welington Castillo had arthroscopic surgery on his right knee over the weekend, and he is expected to recover in 4-6 weeks, the Chicago Tribune reported.

Castillo, 26, hit .274 with eight home runs in 113 games this past season.

He missed the final six games of the season.

---Wally Joyner was hired as the Detroit Tigers hitting coach, according

Earlier in the day, Joyner sgepped down from his job as the assistant hitting coach for the Phildelphia Phillies.

---The Kansas City Royals signed 24-year-old catcher Francisco Pena to a minor league contract, reported.

The Mets signed Pena out of the Dominican Republic when he was 16 years old for a bonus of $750,000. But Pena, the son of former major league All-Star Tony Pena, has struggled in the minors.