Both Watford and Chelsea are in need of points but for very different reasons. Opta crunches the numbers so you don't have to.
"No side have attempted fewer shots on target in the Premier League since the start of December than Watford (28)."
Watford are winless in 13 matches against Chelsea in all competitions (D3 L10) since a 1-0 win in the Premier League in September 1999. Chelsea are [1.65] to win.
That defeat is Chelsea's only loss in their last eight visits to Vicarage Road in all competitions (W5 D2). The draw is [4.1].
This will be both Watford and Chelsea's first matches on Monday since they played out a 4-3 thriller in May last year, won by Chelsea at Stamford Bridge. Over 2.5 goals is [1.92].
Chelsea's 50-point tally after 25 games this season is 10 fewer than they'd won at this stage last season on their way to the title (60). Watford are [2.52] in the Double Chance market.
Watford have 27 points from 25 games this season - they had won more at this stage in both 2016-17 under Walter Mazzarri (30) and 2015-16 under Quique Sánchez Flores (33). Chelsea are [2.54] to win half-time/full-time.
Watford have won six points from 11 games since the start of December (W1 D3 L7) - the worst points tally of any Premier League side in this period. The draw half-time/Chelsea full-time double result is [4.8].
No side have attempted fewer shots on target in the Premier League since the start of December than Watford (28). Under 2.5 goals is [2.02].
Chelsea have scored a league-high 13 headed goals this season, while since his Premier League debut in August 2012, Olivier Giroud has scored the most headers in the competition (27). Giroud is [2.40] to score.
Richarlison has no goals and just one assist in his last 12 Premier League appearances for Watford, despite playing 1044 minutes in these games. He's [4.9] to break his duck with a goal.