New York Mets pitcher Jacob deGrom. Wendell Cruz-USA TODAY Sports

The Mets are placing Jacob deGrom on the injured list, manager Luis Rojas told reporters, including Deesha Thosar of the New York Daily News, this morning. He continues to deal with forearm tightness and won’t throw until that subsides.

It’s not an unexpected development after deGrom’s throwing program was halted yesterday. Nevertheless, it’s still a tough blow to a Mets team that holds a meager 2.5 game lead in the National League East. The diagnosis of forearm tightness and seemingly uncertain recovery timeline are even more alarming, given deGrom’s status as the best pitcher in the league.

deGrom has dealt with a few health issues over the course of the season. He missed a couple weeks with side tightness earlier in the year, and he’s also been forced out of starts early with forearm and shoulder soreness. Neither of the previous arm problems required an IL stint, but his most recent injury will land him on the shelf.

When healthy, deGrom has been truly otherworldly. The two-time Cy Young award winner has worked to a 1.08 ERA across 92 innings. He has struck out an incredible 45.1% of opposing hitters, while walking just 3.4% of batters faced. A healthy second half would make him the prohibitive favorite to land a third Cy Young (and perhaps win the NL MVP award), but it’s now unclear when he’ll again take the mound.

More must-reads:

TODAY'S BEST
Royals return Rule 5 pick to Yankees
Sixers viewed as a 'serious danger' to snatch core Nuggets role player
NFL reporter reveals why CeeDee Lamb isn't rushing to sign new contract
Diamondbacks designate struggling right-hander for assignment
Report: 76ers believe this eight-time All-Star would be 'ideal fit'
Pelicans expected to promote from within for GM role
Watch: Massive wreck on first lap delays Monaco Grand Prix
Grayson Murray's parents release heartbreaking statement on cause of death
Rangers designate right-hander for assignment
Florida guard among players withdrawing from NBA Draft
Cubs prospect blasts home run after being thrown at
Stars even series with hard-fought win over Oilers in Game 2
Celtics surge late to take 3-0 lead in Eastern Conference Finals
PGA Tour golfer Grayson Murray dies at 30
Another heartbreak for Justin Allgaier as Chase Elliott wins Xfinity Series race
Former Bengals first-round pick announces retirement
Luka Doncic joins trio of NBA champions in exclusive club
Yankees ace takes big step in first rehab stint
Which active NFL players are most likely to make the Hall of Fame?
Bulls' Lonzo Ball opens up about injury that's sidelined him for two years