Aston Villa striker was surprise hero against Birmingham.
Gabby Agbonlahor undid much of the damage he did to his relationship with Aston Villa fans by scoring the Second City derby winner.
Birmingham City's survival hopes in the Championship took a significant blow as Aston Villa won the Second City derby 1-0.
The striker's injury has increased Aston Villa's need to sign a new striker during the January transfer window.
Aston Villa's play-off hopes were dealt a blow as they fell to a 1-0 defeat against Cardiff City.
McCormack should be back in the Villa squad for Saturday's clash with Wigan Athletic, but Baker and backup goalkeeper Mark Bunn are expected to miss out.
Few expected Agbonlahor to still be contracted to Villa. Even fewer expected him to be playing for them.
The two strikers are both suffering with knocks ahead of Saturday's home game against Cardiff City, while Micah Richards is set to miss his sixth straight match due to a knee problem.
Villa went on to finish the campaign sixth in the Premier League.
Striker failed to impress in rare run out.