Padres’ manager Craig Stammen conceded Friday that Yuki Matsui (groin) will begin the season on the injured list.

The 30-year-old hurler is making progress in his recovery and is set to face live hitters in the next few days, but he’s going to need a bit longer to get ramped up for the regular season. He should be ready to join the Padres’ bullpen at some point in April.