Watford are big-priced outsiders to defeat Antonio Conte’s Chelsea tomorrow at Vicarage Road.

Walter Mazzarri’s side claimed their first point at Southampton last weekend but face a stern test at home to the 2014-15 champions.

The Hornets are not fancied by the bookmakers to pull off an upset with the hosts on offer at 19/5 with William Hill for victory.

The Blues left it late to grab a 2-1 home win over West Ham United in their opener on Monday night.

But there is an air of optimism at Stamford Bridge again after Conte's arrival.

Chelsea are as short as 8/11 with Coral but there are better ways to support the visitors than backing them at odds-on.

The Blues are not expected to find it easy this weekend and a one-goal margin of victory offers more value at 5/2 (Ladbrokes).

The Hornets have failed to beat Chelsea in their last ten meetings stretching back to their memorable 1-0 home win in 1999.

But Watford held them to draws in both games last season and this may tempt some into backing this outcome at 11/4 (Coral).

Diego Costa scored twice last season against the Hornets and also netted the winner against the Hammers on Monday.

The striker could have a new lease of life under Conte and is worth considering to score at 11/8 (William Hill).