Grimsby stunned League One leaders Carlisle by dumping them out of the FA Cup in their first-round replay.
The Mariners are without a league win in eight games but dominated from the start, with Danny North hitting the bar and Gary Jones heading against a post.
Jones struck after the break when he dummied the ball for North, raced onto his striker partner's back-heel and curled in with the outside of his foot.
Gary Montgomery saved expertly from Danny Graham as Carlisle bowed out.
Grimsby: Montgomery, Clarke, Bennett, Fenton, Newey, Till (Taylor 81), Bolland (Hegarty 36), Hunt, Toner, Jones, North.
Subs Not Used: Oberton, Jarman, Bore.
Goals: Jones 62.
Carlisle: Westwood, Raven, Livesey, Murphy, Aranalde, Gall (Carlton 68), Lumsdon, Bridge-Wilkinson, Smith (Hackney 75), Garner, Graham.
Subs Not Used: Howarth, Joyce, Arnison.
Ref: Nigel Miller (Durham).