Grimsby secured a tense draw with Morecambe to set up a Johnstone's Paint Trophy final against MK Dons.
Grimsby's Danny North had a volley tipped over by keeper Scott Davies, who also saved from Danny Boshell.
But it was all Morecambe after the break with Carl Baker seeing his left-foot shot held on the line at the second attempt by Phil Barnes.
Michael Twiss shot narrowly wide and in added time Craig Stanley was denied the equaliser by a fine save from Barnes.
Grimsby: Barnes, Atkinson, Fenton, Newey, Clarke, Hegarty, Bolland, Hunt, Boshell, Till (Jones 75), North (Bore 55).
Subs Not Used: Montgomery, Taylor, Bennett.
Booked: Boshell.
Morecambe: Scott Davies, Yates, Bentley, Artell, Adams, Thompson, Hunter (Drummond 83), Stanley, Sorvel, Blinkhorn (Curtis 83), Baker (Twiss 70).
Subs Not Used: McIlhargey, McStay.
Att: 7,417.
Ref: Paul Taylor (Hertfordshire).
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