By Hugo Varley

ROLE MODEL: Bradford City keeper Sam Walker has played a big part in their promotion push
PICTURE: Alamy

Bradford City boss Graham Alexander knows all too well that clinging onto clean sheets is the bedrock of any promotion charge – and he couldn’t be happier with who he has entrusted with the task.
Tuesday night’s 1-0 win at Bromley sent the Bantams powering into second place in the League Two table and marked a fifth straight league game without conceding.
The victory in south London was the 13th shutout of the season for keeper Sam Walker.
He made an extraordinary point-...