Jose Mourinho sarcastically thanked a journalist who suggested that referee decisions favoured Manchester United against West Ham.
United ground out a 2-0 win over the Hammers on Monday, which keeps them firmly in the hunt for a top-four finish.
Juan Mata opened the scoring after being introduced as a half-time substitute, with Zlatan Ibrahimovic adding a second late on.
Mourinho admitted it was “not a very good performance” from his players, but he revelled in the fact his substitutions changed the course of the game.
“It was not a very good performance,” Mourinho said. “I think it’s very difficult to play football in these circumstances, with 48 hours.
“I feel immediately when you are fresh you play simple, when you are not fresh you will play complicated and my team, especially in the first-half, everything was complicated, through the middle, always one touch, always the wrong choice, trying to play always through the middle where they compact a lot of people.
“Only when I brought fresh people, Mata, Rashford, the team was different, we gave width with Rashford, we gave positions, an extra body in the creation area, so I think we deserved to win.”
Mourinho was then asked about the decision of referee Mike Dean, who was roundly criticised for his performance after sending off Sofiane Feghouli in the first half.
“If you speak about the decisions, Manchester United are the champions of wrong decisions,” the manager replied.
When it was then suggested by a journalist that referee decisions were favouring United, the Portuguese added: “Which decisions? My decisions to play Mata at half-time and Rashford later? Thank you very much.”