By Sam Bush

The Phillies are putting Rhys Hoskins on the 10-day injured list because of an injury to his left ulnar collateral ligament after a collision at first base on Saturday.

If Hoskins’ left arm responds well while on the IL, he could be activated as early as Sept. 23, because the stint will be retroactive to Sunday.

There will be only four games remaining in the Phils’ regular season at that point.

It is a huge blow to their offense, which was almost non-existent against the Marlins.

Hoskins has been one of the hottest hitters in baseball for weeks, and he is certainly one of the top performers on the team.

“We’re not ready to say that he’s out for the year,” Phillies manager Joe Girardi said after the 6-2 loss to the Marlins. “Our hope is that we’ll get him back. Other guys have continued to hit through this. We basically have to see where he’s at after a few days to see what’s next for Rhys.”

JT Realmuto suffered a strained left hip flexor on Saturday. He will not be placed on the IL, but he will probably miss at least the next couple days.

“Then we’ll go day by day, and we’ll have to see what his workload is after that,” Girardi said.

Realmuto sounded encouraged.

“It feels better today than it did yesterday,” Realmuto said. “Yesterday was pretty sore. I’m not sure exactly the timetable. I’m going to listen to the doctors and the trainers and kind of let them decide that. As long as I keep progressing like I did today, I don’t think it should be too long. … I’m not sure necessarily that it’s even hip. It’s kind of upper quad. It’s more muscular, which is a good sign.”