It was a Jekyll and Hyde performance from the Red Dragons who were woeful and submissive in the first half but much more brave and imposing in the second period. After failing to register a single shot over the opening 45 minutes, they carved out a few quality chances after the break, culminating in Fletcher's decisive strike before Mullin smashed in the second.
Although they were the better team from the start, Wimbledon had a hard time creating chances and were made to pay for their wastefulness when Wrexham came to life. Elliott Lee had the home team's first big chance but his shot was saved by the goalkeeper. It fell to Fletcher, who managed to get free and have another pop but he hit the bar.
Wrexham built on their resurgence and, after Wimbledon saw another chance blocked, James McClean broke down the wing and fired a shot towards goal but couldn't beat the goalkeeper. Immediately afterwards, though, the Irish winger sent a corner kick straight to the back post where Fletcher was perfectly placed to knock it in from close range. And just eight minutes later, a McClean cross flew into the Wimbledon box and bounced off Jack Currie before landing perfectly for Mullin to blast in and double their lead.