Minnesota United starting center back Bakaye Dibassy went down clutching his right leg in the seventh minute of Saturday's late-game comeback victory over Houston and left the game with an injury that concerned coach Adrian Heath.
Heath didn't specify the injury that came when Dibassy competed for a ball, other than to say, "We think it's more muscular."
Veteran Brent Kallman replaced Dibassy and played the rest of the game.
Heath said Dibassy was undergoing an MRI.
"It doesn't look good, though," Heath said. "We'll have a bit more information either later this evening or tomorrow."
Without Dibassy, possible starters in his place include Kallman, Nabi Kibunguchy, Callum Montgomery or even central midfielder Kervin Arriaga.
"Kervin's played there for his national team and in league games with this team down in Honduras, so we've got a few options," Heath said.
None as accomplished as Dibassy, though.