Toronto FC striker Jozy Altidore suffered a quadriceps injury over the weekend, the club confirmed Wednesday.

Altidore left the Reds’ regular-season finale against the Columbus Crew on Sunday in the 70th minute after going down awkwardly, when defender Jonathan Mensah slid to block a shot by the 29-year-old forward just outside the six-yard box. He walked off the field on his own, but had a slight limp as he entered the tunnel.

TFC went on to earn a 1-0 win and home-field advantage in the first round of the single-elimination playoffs. Coach Greg Vanney told reporters post-game that Altidore’s quad was “sore” and would undergo an MRI. The club confirmed the injury three days later, but the timeline for his recovery remained unclear.

On Tuesday, Altidore withdrew from the United States roster ahead of CONCACAF Nations League games against Cuba and Canada. He will receive treatment and therapy in Toronto as the Reds prepare for their playoff match against D.C. United on Oct. 19 at BMO Field. Both Altidore and Vanney told TSN’s Kristian Jack they were optimistic the forward would be available for that match.

“I’m going to do everything I can to be ready for another special night at BMO Field,” Altidore said.

The striker has 11 goals in 23 appearances this season. He missed two games in August and September with a mild quad strain. A hamstring injury also kept him out for five starts earlier in the season.

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