Oscar Gobern’s winner four minutes from time saw Dover win their third consecutive friendly and extend their pre-season unbeaten run to six matches.
The midfielder slotted in to cancel out Anthony Cook’s penalty after Nassim L’Ghoul gave Dover an early lead.
The visitors made the perfect start when L’Ghoul smashed in the opener from six yards with the match only three minutes old.
Yusuf Mersin then reached down low to deny Anthony Cook from an angle.
Kurtis Cumberbatch twice went close from distance as Athletic’s superior league status showed in the first 30 minutes.
Steven Rigg nearly doubled the lead five minutes before the break.
The striker headed Josh Passley’s cross downwards, but Wilks stopped the ball from crossing the line with his legs.
Julian Anau then headed off target when well placed at a corner.
There was plenty of drama straight after the restart.
Sub keeper Lee Worgan made a stunning one-handed saved to deny Montel Agyemang from point-blank range, but looked resigned to losing his clean sheet with Josh Oyinsah following up, but United’s striker somehow blazed wide with the goal at his mercy.
L’Ghoul curled inches wide of the target but the National South side levelled on 63 minutes from the spot.
After being fouled in the box, Cook picked himself up and sent Worgan the wrong way from 12 yards.
Athletic searched for a winner which duly arrived four minutes from time.
Gobern slotted in Bobby-Joe Taylor’s pass add to his goal against Maidstone United earlier in the week.
Dover next host League One Gillingham on Tuesday 23rd July. Kick off 7:45 pm.
Dover: Mersin (Worgan 46), Passley (Trialist 46), Doe (Sinnock 46) (Passley 70), Lokko (c), Wratten (Taylor 63), Woods (Trialist 46), Munns (Gobern 46), Reason (Pavey 46), Cumberbatch (Pont 63), L’Ghoul, Rigg.
DOVER ATHLETIC REACTION
WELLING UNITED REACTION