Griffin Canning Believed To Have Suffered Achilles Injury

Mets starter Griffin Canning had to be helped off the field in the third inning of tonight’s win over the Braves. He injured his left leg in what initially seemed to be a small, harmless hop after a Nick Allen chopper to shortstop (video via Awful Announcing). Replay showed Canning’s foot appear to buckle as he hit the ground, immediately raising concern about a potential Achilles tear.

The team initially announced that Canning was being evaluated for a left ankle injury and was headed for an MRI. The club won’t provide a specific diagnosis until the imaging results come back, but manager Carlos Mendoza confirmed postgame that they believe it is an Achilles injury. While there’s no timeline yet, Canning’s season certainly seems to be in jeopardy.

Canning has been a surprisingly important piece of the Mets pitching staff. He signed for $4.25MM as a free agent after being let go by the Angels (in a salary dump trade) and Braves (via non-tender) earlier in the offseason. The former second-round pick might’ve opened the season in long relief had everyone been healthy. Injuries to Sean Manaea, Frankie Montas and Paul Blackburn pushed him into the starting five. He ran with the opportunity.

The 29-year-old Canning took a 3.91 earned run average across 73 2/3 innings into tonight’s start. His abbreviated outing dropped that to a 3.77 mark. He has gotten ground-balls half the time while recording a league average 21.3% strikeout rate. The strikeout rate is up nearly four percentage points while he has cut his ERA by about a run and a half relative to his final season with the Angels. The Mets encouraged Canning to use his slider a little more often than he had with the Halos to positive results.

While Canning struggled last season, he’d shown the potential to pitch at the back of a rotation earlier in his career. He’d struggled to rack up many innings because of various injuries, though. He lost a good portion of ’21 and the entire following year to a stress reaction in his lower back. Canning also missed time with elbow soreness at the beginning of his career. He had avoided the injured list for the past year and a half.

The Mets have lost three starters this month. Tylor Megill is going to miss at least a month with an elbow sprain, and they’ll need to closely monitor his progress to try avoid any setbacks. Kodai Senga will be down for a couple weeks with a hamstring strain. Canning’s injury seems the most severe of all.

Montas returned to make his season debut this week. Manaea is expected back next week despite a brief setback after he received an injection to treat a loose body in his elbow. Blackburn, who was briefly the subject of trade chatter when he seemed to be seventh on the depth chart, is now entrenched in the rotation behind Clay Holmes and David Peterson. The Mets will go with Peterson, Blackburn and Montas for this weekend’s series in Pittsburgh. They’re off on Monday and could activate Manaea to take Canning’s rotation spot next week. Blade Tidwell and Justin Hagenman are candidates for a spot start if they want to give Manaea a few extra days.

The Mets probably would have been in the rotation market at the deadline even if Canning were healthy. There’s a lot of risk in counting on Megill to make a smooth return from an elbow injury. Montas got through five scoreless innings in his season debut but had been knocked around on his minor league rehab stint.

Canning will reach six-plus service years and return to free agency this offseason. A significant Achilles injury would threaten a good portion of his ’26 availability and would obviously deal a huge hit to his market value.