The Spaniard fired home to find the opening goal of the game after Rashford made a brilliant play out wide and found a perfect pass for Mata, proving Mourinho’s substitutions were the difference on Monday evening.
Speaking during Sky Sports‘ coverage of the game, Neville said: “Jose Mourinho influenced this game with his two changes.
“It’s a good pass from Michael Carrick [for Mata’s opener]. Rashford’s good, really good – he takes him on and then shows composure with the pass to Mata.
“Mata is always composed and used the pace on the ball from Rashford to guide it into the corner. That’s the difference.”
Mourinho deserves praise for his tactical changes because United looked like a completely different side in the second-half, which was expected as he seemed infuriated at the half-time whistle.
West Ham were were reduced to 10 men early on when Sofiane Feghouli was sent off for a challenge on Phil Jones and it almost seemed like United didn’t quite understand how to play against it.
Mourinho’s changes in the second-half earned United the victory and they now sit 10 points behind leaders Chelsea, only one point behind fourth-placed Arsenal.