West Ham will take on Swansea at the Boleyn Ground in the Premier League on Saturday afternoon.
The Hammers will head into the game high on confidence and with belief that they can pick up all three points.
Gray has backed Slaven Bilic’s side to win the match against the Swans and retain their chances of a top-four finish in the Premier League this season.
“The penultimate game at the Boleyn Ground and it’ll be emotional,” the former Scotland international wrote on Paddypower.com. “West Ham still have a chance of making the top four. What a way that would be to start life in the Olympic Stadium.”
A footnote added: “Andy’s bet: West Ham win at 4/9.”
West Ham will head into the match against Swansea on the back of a 3-0 victory over West Bromwich Albion away from home at The Hawthorns in the Premier League.
The Hammers are in good form at the moment, and it will be a surprise if they lose to the Swans.
The Welsh outfit can pick up a point from the match in London, but West Ham should be able to win the game with relative ease.