Withdean crashed out of the FA Vase in an incident-packed fourth round replay away to Diss Town.
Sam Francis netted for the visitors in the 76th minute but by then their Jewson East Premier League rivals were 3-0 up thanks to an impressive second half display.
Along with the goal action, the game also produced a sending off with Withdean's Clay Lamont getting his marching orders while the hosts' midfielder Scott Lindsay had to be rushed to hospital after a 45-minute delay with a suspected broken leg.
Diss dominated the early proceedings and Withdean had to wait until 19 minutes for their first real opening, when Shaun Grice put in a shot which looped over from a deflection.
A minute later Diss had three chances to shoot as the ball bobbled around in the area with the visitors flinging bodies in the way to block.
Diss won a string of corners on 28 minutes as they began to take charge and Lee Gillman narrowly failed to connect with one ball across the box.
Withdean hit back immediately when Owen Hill smashed the ball across the box and it fell kindly for Glen Davies, who shot agonisingly wide.
Diss winger Matty Joynson caused problems for left-back Ollie Roland all evening and the visitors had to clear a dangerous cross after half an hour.
Gillman should have given Town the lead five minutes before the interval but dallied on the ball two yards out and Withdean managed to clear.
The game changed after the restart with Diss battering their visitors. The dangerous Coren Hardy fired a powerful effort narrowly over from 30 yards on 49 minutes.
On 55 minutes Joynson gave Diss the lead with a stunning strike. The winger picked up the ball five yards from the halfway line, ghosted past two men and fired in a 40-yarder.
On 59 minutes Hardy should have made it 2-0 but failed to force a tap-in chance over the line.
The game changed dramatically soon after when, from another Diss corner, the ball came out to skipper Matty Wright on the edge of the box and his powerful shot was kept out by Lamont with his hand. The referee had little choice but to send him off for deliberate handball and Hardy made the visitors pay double by stroking home the spot-kick for 2-0.
After a lenghty hold-up for the injury to Lindsay, Diss were back on the attack and it was 3-0 on 71 minutes when Hardy did brilliantly on the corner of the six-yard box to hold off a challenge before firing low past Waters.
Withdean soon replied, when Jay Pickering seized on some sloppy defending and squared for Francis to slam home from ten yards but it was not enough.
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