Wycombe goalkeeper Jamal Blackman saved a penalty to thwart Blackpool for a second time this season as his side held on for a 0-0 draw.The 23-year-old, on loan from Chelsea, saved a penalty in normal time and one in a shoot-out when the Chairboys knocked Blackpool out of the Checkatrade Trophy in January.And, with four minutes left on the clock in this game, Blackman saved Brad Potts' spot-kick to preserve a point.The first chance of the game fell to Adebayo Akinfenwa who drilled wide after 10 minutes.Midway through the first half a speculative effort from Potts grazed Blackman's crossbar.On the stroke of half-time Paris Cowan-Hall's low drive brought a smart save from visiting goalkeeper Dean Lyness.Shortly after the break a Potts effort was acrobatically clawed back from the goal-line by Blackman. Blackpool claimed the ball had crossed the line but their appeals fell on deaf ears.And Wycombe's keeper had his crowning moment in the dying stages, producing a brilliant save to deny Potts from 12 yards.