Watford are only behind West Brom in the play-off spots on goal difference following their 2-2 draw at Plymouth on Friday night and have won three of their last five games (D1 L1).
They host Bristol City on Tuesday night, who fell to their second defeat in three games in a 1-0 loss at home to Burnley on Saturday, having previously been unbeaten in eight (W3 D5).
Watford have lost only one of their last six league games against Bristol City (W2 D3).
Bristol City are looking to win consecutive away league visits to Watford for the first time since doing so in 2007-08 and 2008-09.