Sheffield United, currently in fifth place, could win four consecutive Premier League matches for the first time since 1993.
Bottom club Watford look to move to within three points of safety by following up Nigel Pearson's winning start as head coach with victory at Bramall Lane.
Teams news
John Fleck has served a one-match ban and is available for Sheffield United, who have no fresh injury concerns.
Watford's Abdoulaye Doucoure is suspended after picking up his fifth yellow card of 2019/20 against Manchester United, but no other injuries have been reported.
Did you know?
Sheffield United have lost just one of their last five home league games against Watford, though it was the most recent such meeting in the Championship back in October 2010).
Watford are unbeaten in their last four league meetings with Sheffield United (W3 D1), keeping a clean sheet each time. Only against Stoke City (6 between 2005-2015) and Brighton & Hove Albion (5 between 1968-1973) have they recorded more successive shutouts in league football.
Match officials
Referee: David Coote. Assistants: Peter Kirkup, Nick Hopton. Fourth official: Ben Toner. VAR: Martin Atkinson. Assistant VAR: Stephen Child.