Bristol City starting XI: Fielding; Little, Williams, Flint, Ayling, Bryan; Saville, K.Smith; Freeman; Emmanuel-Thomas, M.Smith
Bristol City substitutes: Richards, Osborne, Cunningham, Wagstaff, Elliott, Pack, Agard.
West Ham United starting XI: Adrian; Jenkinson, Reid, Tomkins, Cresswell; Song, Noble, Nolan; Downing, Carroll, Valencia.
West Ham United substitutes: Jaaskelainen, Demel, Poyet, Amalfitano, Jarvis, Sakho, Cole.
West Ham United will be looking to avoid an upset this afternoon when they face Bristol City at Ashton Gate in the fourth round of the FA Cup.
The Hammers saw their Premier League rivals struggle this weekend, with Chelsea, Manchester City and Tottenham losing to Bradford City, Middlesbrough and Leicester City respectively, whilst Liverpool and Manchester United could only muster 0-0 draws against Cambridge United and Bolton Wanderers.
Manager Sam Allardyce is clearly taking the competition seriously, naming a strong line-up which features Adrian, Winston Reid, Alex Song and Andy Carroll.
Meanwhile, hosts Bristol City are flying in League One right now, and sit second in the table - with manager Steve Cotterill hoping for a giantkilling this afternoon.
He can call upon former Chelsea midfielder George Saville, ex-Leeds hitman Matt Smith, and four players who came up through the ranks at Arsenal - Luke Ayling, Luke Freeman, Jay-Emmanuel Thomas and Kieran Agard.