Swansea City remain in the Premier League relegation zone after they were held by a West Ham side who recorded a third straight goalless draw.
The managerless Swans dominated the first half as Ki Sung-yueng and Andre Ayew missed good chances.
Jack Cork had a spectacular volley saved by Adrian after the break, while Swansea appealed in vain for a penalty for a James Collins handball.
Swansea stay 18th, two points from safety, while West Ham remain eighth.
The Hammers had to settle for a fifth draw from six Premier League games, but the result will have been frustrating for the Swans, who have now won only one of their last 13 league matches.