Ayr Raid   Inverness surged into a three goal lead inside 20 minutes, Nathan Austin bagging the first two goals and Liam Polworth adding the third with a low shot from outside the box. It remained 0-3 at the interval but substitute Lawrence Shankland made his presence felt as he set up Declan McDaid to open Ayr's account eight minutes after the break. Shankland scored from a free kick with five minutes to go to set up a tense finish but Inverness just managed to hold on to take all thr