Stephen Robinson makes one change to his side for tonight's Premier Sports Cup quarter-final tie against Kilmarnock.
Defender Marcus Fraser misses out after injuring his ankle in last weekend's win over Falkirk. Richard King comes in in his place.
Liam Donnelly comes into the squad for the first time this season and he takes a place on the bench. The midfielder has this week changed his squad number from 44 to 4.
Liam Donnelly with Scott Tanser
The opposition make one change from their defeat to Celtic on Sunday as ex-Saint Greg Kiltie comes in from the start ahead of Rory McKenzie.
Kick-off at Rugby Park is at 7:45pm and is live on Premier Sports Player and St Mirren TV (video only available to those outside UK and Ireland).
St Mirren: George, King, Gogic, Freckleton, Richardson, Phillips, Baccus, O'Hara (c), John, Ayunga, Mandron
Subs: Mullen, Tanser, Donnelly, McMenamin, Idowu, Dijksteel, Calvin, Mooney, Nlundulu
Kilmarnock: Stryjek, Brown, Mayo, Stanger, Deas, Thompson, Polworth, Watson, Kiltie, Dackers, Daniels
Subs: Beach, Williams, McKenzie, Magennis, Anderson, Thomson, Watkins, Schilte-Brown, Brannan
