Leeds exited the FA Cup as Jamie Collins' scored the winning goal
Sutton won 1-0 to progress to the fifth round against a Leeds side with 10 changes from Wednesday’s result over Nottingham Forest.
Collins slid home the winning penalty early in the second half.
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And the hosts restricted the Championship side to just three shots on target.
"It is a great day,” Collins told BBC 5 Live.
"You can see what it means to the fans. To beat Leeds is a fantastic achievement. We saw their team and fancied our chances and luckily we won.
Sutton United beat Leeds to reach the fifth round of the FA Cup
"I have got a lot of family here so that makes it even more special.
"We train twice a week. On Friday I was on a building site.
"We won and hopefully we get a big team in the next round and see what happens."