West Ham United are unbeaten in six Premier League fixtures against Sunderland (W3 D3).
Sunderland have won only one of their last 11 away top-flight outings against the Hammers, losing eight times.
The Hammers have kept more home clean sheets versus Sunderland than against any other Premier League side (nine) and have not conceded in any of their last three.
David Moyes is unbeaten in his last 12 Premier League meetings against West Ham (W8 D4).
Slaven Bilic: "It's great that [Ayew] is back. It’s difficult to judge when he’ll be back on the pitch. He’s improving in every session."
David Moyes: "We've been really disappointed. We've had games where we've been in front and we've had games when we could have picked up points. We need to be better."