Grayson's side played Motherwell at livingston's gound on Friday evening and took a two goal lead before the break thanks to Joe Garner and a curling effort from the edge of the box from Kilkenney.
The Whites then conceded in the game when Moult pulled a goal back late on. Jamie Jones was impressive throughout th ematch as he kept the Scottish side out until the dying moments.
Pretson remained in Scotland watching the Celtic friendly game on Saturday and will travel to Carlisle for the next pre-season game on Tuesday before Ashington on Wednesday and the final game at Bury this Saturday before the season starts.