With both teams sitting bottom of their respective leagues, a Kent Senior Cup game (which had already been postponed on more than one occasion) didn’t seem high on the priority list for either side.
Despite playing a squad largely comprised of current academy players and graduates, the Whites progressed with ease.
The ball was in the back of the net in the first 5 minutes with Whyte heading the ball past the keeper from a cross originally intended for Oladipo, who was adjudged offside.
Consistent pressure from Dover returned some decent attempts but many failed to hit the target. In the 22nd and 26th minutes respectively both Nico Jones and Charlie Naylor were booked by the referee.
Just before half time Dover got their reward with a goal from Whyte on the left hand side of the box, striking low under the keeper from a tight angle.
Whites had the better of the first half and could easily have been a couple up despite Beckenham threatening from some set pieces.
Half time substitutes for the Whites saw Naylor make way for Mensah and Dembele for Baptiste.
In the 54th minute Nico Jones was shown a second yellow for a very soft foul and was given his marching orders. Dover quickly responded, despite now being a man down, with Destiny Oladipo finding the back of the net.
Gaps began to show for the Whites with Beckenham pressing high up the pitch, their best chance of the night was blocked on the goal line by Jacob Mensah, stopping a certain goal.
A few moments later Whyte made way for Nikaj which quickly followed a second goal for Destiny Oladipo. His drive struck a defender and flew into the net.
A flurry of goal mouth scrambles and late attacking threat from Beckenham was cleaned up effectively by the Dover defence who then went on to score in the final moments of the game when brilliant work by Baptiste put it on a plate for Gray who made no mistake from a few feet out.
Dover now head to Ebbsfleet in the Quarter final of the Kent Senior Cup, date tbc.
Beckenham Town: Taylor, Aina, Griffin, Travers, Wright, Ikudehinbu, Britnell (Nyhus 63), Allen (Wyborn 71), Falade, Akintimehin, Pink.
Subs not used: Townsend, Wanogho. Paul-Lavaly.
Yellow card: Wyborn
Dover Athletic: Simmons, Holness, Odeniran, Young, Naylor (Mensah 46), Jones, Dembele (Baptiste 46), Hatcher, Oladipo, Gray, White (Nikaj 69).
Subs not used: Kray, McCarthy.
Goalscorers: Whyte (43), Olapido (58), (73), Gray (89)
Yellow card: Jones, Naylor
Red card: Jones
Referee: Ben McDonald
Attendance: 80