The Pars lose out in the 4th round to an 87th minute winner by Liam Buchanan, who scored his second of the game to end any hope of a cup run this season.
Partick came from a goal down to win the match, as just after the break Wilson had put the Pars ahead, but 20 mins later Buchanan had levelled the game for Thistle and with 3 mins to go Buchanan scored what was the winning goal that sent Partick through to a 5th round tie away at Livingston.