The FA Cup is renowned for its giant-killing. Wrexham came within seconds of beating Premier League hopefuls Sheffield United in their fourth-round tie. However, the latter held on for a draw to force a replay on Tuesday. Check out our best Sheffield United-Wrexham FA Cup soccer picks.
A home tie against Tottenham awaits the winner of Tuesday night's match. There must be a victor, so a draw in this game will mean extra time and penalties.
Wrexham's talisman, Paul Mullin, was on the scoresheet in the last game and will be looking to be among the goals again on the big stage.
Sheffield United head into the match following a tough 0-0 draw against Rotherham United in league play. That put a dent in their push for promotion back to the Premier League, and they'll have one eye on Saturday's Championship match at home to Swansea. The Blades could make changes for the replay, with their priorities for the season elsewhere.