Fire coach Frank Klopas classified injured captain Logan Pause as day-to-day on Friday after the midfielder hurt his hamstring and groin in Wednesday's 2-0 win over the Charlotte Eagles in the third round of the U.S. Open Cup.
Klopas said Pause would be evaluated on Saturday to determine if he can play in the team's game against the D.C. United at Toyota Park on Sunday.
Pause sustained the injury in the late minutes of the first half but was able to recover and played out the duration of the half. In a move that was determined prior to kickoff, Pause was removed from the game at halftime.
Most of those who played in Wednesday's game had regeneration inside Toyota Park on Friday and did light cardio work.
Should Pause be unable to play on Sunday, Joel Lindpere is likely to replace him in the lineup.
Including Wednesday's Open Cup game, Pause has started eight straight games for the Fire since he returned from an injury he sustained in the week leading up to the season-opener that kept him out the first four games of the 2013 season.