Kelechi Iheanacho scored a penalty winner nine minutes into stoppage time after a video review, boosting Celtic’s Premiership defence thanks to a comeback win at Motherwell as the most dramatic title race in decades took another sensational twist. Iheanacho slotted in a spot-kick after the former Hearts midfielder Sam Nicholson was penalised for handball after jumping to head the ball away. The ball appeared to hit his raised hand right in front of his head. Another former Hearts player, Motherwell’s Liam Gordon, had appeared to hand his old club a massive advantage in the title race after netting an 85th-minute equaliser. At that point, Celtic were heading into a final-game title decider needing to beat Hearts by three goals and they did not look like getting a winner until the referee, John Beaton, was called to the monitor by the video assistant, Andrew Dallas, as five minutes of stoppage time were coming to a close.…