David Moyes has praised Manuel Lanzini after the Argentine changed the game when he came on as a second-half substitute during the 1-0 win over Watford.
Lanzini was a doubt for the match after Moyes revealed he was suffering from an achilles' injury and the No.10 was only deemed fit enough to take a place on the bench.
The Argentina international had started the previous five Premier League matches for the Hammers but injury saw him reduced to a superb 30-minute appearance off the bench.