A first career goal for 17-year-old Ryan Bennett helped Grimsby earn an opening day draw against Notts County.
The full-back netted in the 12th minute when Ciaran Toner's free-kick out on the left saw Bennett rise in a crowded box to head past Kevin Pilkington.
Neil MacKenzie equalised for County when his 25-yard shot took goalkeeper Phil Barnes by surprise.
Barnes denied a Richard Butcher shot but Grimsby should have grabbed a winner when Gary Jones headed over.
Grimsby: Barnes, Fenton, Whittle, Bennett, Newey, Till (Bore 78), Hunt (Jones 68), Bolland, Boshell, Toner, Rankin (North 54).
Subs Not Used: Clarke, Montgomery.
Goals: Bennett 12.
Notts County: Pilkington, Silk, Hunt, Canoville, Mayo, Butcher (Smith 79), Somner, MacKenzie, Parkinson (Weir-Daley 79), Lee, Dudfield (Sam 62).
Subs Not Used: Sandercombe, McCann.
Goals: MacKenzie 29.
Ref: M Thorpe (Suffolk).