Unfortunately United failed to perform until the last fifteen minutes, aided by the introduction of subs Kevin Davies and Mick Swaysland.
Greg Howell (29) and Aiden O'Brien (31) both hit a post before slack marking allowed Coombs to put Stoke 2-0 up (43).
On 70 mins Wilkinson was about to be cautioned for a foul and was sent off for dissent, and United pulled a goal back on 73 minutes when Swaysland crossed for Davies to head home.
In a 'cup-tie finale' Davies almost salvaged a point but hit the underside of the bar.