Mets ace Kodai Senga crumpled to the grass after taking an errant throw from Pete Alonso and securing an out at first base in the sixth inning of Thursday’s game against the Nationals at Citi Field.

After staying down for a bit, Senga walked off the field under his own power without much of a limp.

Advertisement

On the play, Alonso led Senga to first base after fielding a grounder by CJ Abrams. But Alonso’s throw was high, leading Senga to jump for it before coming down on the bag with his right foot.

Senga immediately grabbed the back of his right leg, near his hamstring area, after landing on the bag.

He departed the game after a brief discussion, and will be placed on the IL with a hamstring strain, manager Carlos Mendoza said after the game.

Senga will undergo an RBI to determine the severity of the injury.

The right-hander had been turning in another dominant start, with 5.2 scoreless innings that lowered his ERA to an MLB-best 1.47.

Advertisement

If Senga has to miss time, the Mets could potentially turn to Paul Blackburn, who has been in the bullpen. Meanwhile, Frankie Montas should be back after one or two more rehab starts, and Sean Manaea is expected to return in the next few weeks.

The Mets also have starting pitching options in the minors, including Nolan McLean and Brandon Sproat.

Senga missed all but one start during the regular season last year.

First, he dealt with arm woes that delayed his season debut until July 26.

Then, in his first start, Senga suffered a calf injury that ended his regular season.

He made a few appearances in the postseason, but was not at his best.