Crewe boss Steve Davis is planning on diving into the loan market for reinforcements after Harry Bunn suffered a knee injury.
Manchester City loanee Bunn collapsed in agony clutching his knee on the hour and he looks likely to join fellow forward Mathias Pogba on the treatment table for a while.
It leaves a heavy scoring burden on youngsters Max Clayton and A-Jay Leitch-Smith, who both failed to make an impact on unbeaten Tranmere's watertight defence.
Davis said: "Harry twisted funny on his knee but we won't know how bad it is until we have looked at it properly.
"If it is an injury that is going to keep him out for several months, then he will go back to Man City and I will have to look into the loan market to bring someone else in.
"Pogba's still a few weeks away so we need to look to bolster the forward line."