Exeter maintained their League Two promotion push with a 1-0 victory over lowly hosts Grimsby Town.It was a tale of two penalties as the first-half drew to a close at Blundell Park, before the Grecians were later reduced to ten-men when Kane Wilson picked up two yellow cards.Jayden Stockley made no mistake for Exeter in the 37th minute - but 90 seconds later, JJ Hooper sent his spot-kick wide at the other end.Hooper struck over when well positioned earlier on, while full debutant Harry Clifton was also stopped in his tracks on the line.Upon the restart, the advancing Troy Brown headed inches wide of James McKeown's right-hand post.A long-range attempt from Hooper, shortly before he was replaced, was as close as Grimsby came in the second-half.Mitch Rose and Clifton also missed the target with almost identical drives, while loanee Jamille Matt entered the fray and forced Christy Pym into his first save.But the referee soon called time as Grimsby's winless run was extended to 14 matches.