The Hornets have lost both games and are yet to score a goal, sitting bottom of the table.
The England global, who scored his last Premier League goal in a 3-1 Arsenal win over West Ham three days shy of exactly one year ago, made his Watford debut as a late substitute against Everton.More news: Gennadiy Golovkin's GGG Promotions links up with Eddie Hearn's Matchroom Boxing
The 1-1 draw at Brighton last weekend was in many ways a more substantial cause for concern, especially given that, without the heroics of goalkeeper Łukasz Fabiański, West Ham could well have whimpered home from the encounter on the south coast.
West Ham will however have a moral advantage given that they had a better summer transfer window and have most of their players available for the game.
Watford have still not scored this season, and will need their strikers to step up against West Ham United.More news: England coach Eddie Jones make raft of changes ahead of Ireland clash
Watford captain Troy Deeney has been ruled out for "several weeks" after undergoing knee surgery, the club have confirmed.
Club record signing Ismaila Sarr and Danny Welbeck are yet to start a game for Watford but the manager has indicated that they could be in line to do the same this weekend vs the Hammers.
The 32-year-old started officiating A-League matches in the 2010-11 season, going on to referee five A-League Grand Finals.More news: Bose adds Home Speaker 300 to its smart speaker range in India
Deeney played the full 90 minutes in Watford's first two games of the season - a 3-0 defeat by Brighton and a 1-0 loss to Everton.