Leeds final first team game of pre-season ended in a 1-1 draw at Grimsby, however with many of the first team missing, boss Kevin Blackwell used the game to look at fringe players and trialists.
The Whites boss handed debuts to trialist goalkeeper Darren Ward and former Sheffield United man Carl Asaba.
Foreign trialists Jerome Bonnissel and Roland Benschneider also featured for Leeds.
John McDermott put the home side ahead after nine minutes after Leeds failed to clear their lines.
United equalised after the break with Eddie Lewis scoring from a Frazer Richardson cross.
GRIMSBY TOWN 1 (McDermott 9) LEEDS UNITED 1 (Lewis 52)
Grimsby: Barnes, McDermott (Croft 71), Newey, Harkins, Whittle, Futcher, Toner, Rankin (North 79), Bore (Foy 57), Jones, Beagrie (Hegarty 71). Subs: Barrick, Chamberlain.
Leeds United: Ward, Richardson (Madden 65), Bonasel (Camfield 77), Gregan, Benscheidr, Einarsson (Hird 56), Asaba (Gardner 46), Bayly, Beckford, Moore (Garra 56, Howson 84), Lewis (Morris 65). Subs: Wilberforce.