The Republic of Ireland goalkeeper has become Middlesbrough's sixth signing of the transfer window after sealing a £5 million switch from the Hammers
Darren Randolph has completed a £5million transfer from West Ham to Middlesbrough after the arrival of Joe Hart saw him fall down the pecking order at London Stadium.
The Republic of Ireland international made 22 Premier League appearances for the Hammers in 2016-17, helping Slaven Bilic's side finish 11th, but Hart's signing on loan from Manchester City left him unlikely to be first choice in the new season.
Randolph joined West Ham on a free transfer after being released by Birmingham City in 2015 and Bilic told the club's official website: "I would like to thank Darren for his service to the club over the past two years.