The team brought up Efren Navarro from Triple-A Iowa, who will wear uniform number 50. Navarro will be available for the Cubs Tuesday afternoon as they play their home opener against the Pittsburgh Pirates at Wrigley Field, the team announced.
Rizzo, who has missed the Cubs’ last three games, said he suffered a back injury during the team’s series against the Cincinnati Reds, and the injury flared up when he played Thursday against the Milwaukee Brewers. He was placed on the 10-day disabled list with "lower back tightness" Monday, retroactive to Friday.
The 31-year-old Navarro has played parts of five major league seasons with the Los Angeles Angels and Detroit Tigers. He has played 87 games at first base and 44 in the outfield.