Bradford City are sweating on the fitness of defender Reece Burke heading into the League One play-offs.
Burke is on a season long loan from West Ham and has been excellent in central defence, making 30 league appearances.
The 19-year-old was injured at the weekend in the club's 4-0 win over Walsall.
Manager Phil Parkinson is hopeful the injury is not serious, and told the club's official website: "His hamstring was a bit tight.
"To be fair to Reece, he had a problem with his calf leading up to this game but he was adamant that he was going to play.
"We will have a look at him this week but hopefully it isn't serious."
Bradford's big win at the weekend keeps them in fifth position, one point behind the team they hammered, Walsall.
Automatic promotion is seemingly out of range for Bradford, but a potential play-off tie against West Ham's rivals Millwall is one possibility, which fans of the Hammers will be hoping Burke can recover for and make an impact.
Burke made three appearances for West Ham early in the season in the Europa League qualifiers, and is expected to get a chance in pre-season for the Hammers to show what he can do ahead of the 2016/17 campaign.