Yu Darvish's rehabilitation from right triceps tendinitis has advanced to the stage where he's scheduled to pitch off a mound Tuesday at Miller Park for the first time since pitching in his last game on May 20.
The Cubs might not have a finish line for Darvish's rehab, but his bullpen session could help shape a realistic target date for his return to the rotation.
"We'll see how well it goes, how it feels," manager Joe Maddon said. "The next day is what really matters."
Because of the long layoff, the Cubs will continue to be deliberate in monitoring Darvish's recovery. Darvish didn't throw for nearly 10 days after he was scratched from a start on May 27, and he will need to build arm strength before he embarks on a minor-league rehabilitation assignment.
Those factors raise the question as to whether he will return before the All-Star break.
Reliever Carl Edwards Jr. is scheduled to play catch Tuesday for the first time since being placed on the 10-day disabled list on May 30 because of right shoulder inflammation.