David Moyes said he is glad to have given Divin Mubama some minutes against Arsenal due to West Ham United's injury problems up front.
The Hammers lost 3-1 to the league leaders on Boxing Day after Said Benrahma put the visitors ahead from the penalty spot before half-time.
Second-half goals from Bukayo Saka, Gabriel Martinelli, and Eddie Nketiah denied Moyes' side the chance to leave the Emirates Stadium with any points but there was a positive, courtesy of the 87th-minute introduction of Mubama for his Premier League debut.
