Marko Arnautovic had no sympathy for his old boss Jose Mourinho after he crowned a 3-1 win for West Ham that piled further pressure on the Manchester United manager.
Against an abject Red Devils side, the Hammers secured a big win at London Stadium, with Felipe Anderson opening his Premier League account through an impudent backheel and Andriy Yarmolenko seeing his strike deflected past David De Gea off Victor Lindelof before half-time alone.
Substitute Marcus Rashford briefly gave United hope but Arnautovic – who was a reported close-season target for Mourinho despite failing to make the grade under him at Inter – slotted home a third to spark joyous celebrations from the home fans.
When asked by BT Sport whether he had a message for Mourinho post-match, the Austria international replied: “No, nothing to say. I look at my team. We try to win games
“Whatever the other team does, and whatever problems [they have], it's their stuff, not our stuff.”
Arnautovic was back in Manuel Pellegrini's side after being sidelined by a knee problem that captain Mark Noble revealed limited his time on the training pitch this week.
“Marko hasn't trained much," the 31-year-old added, having slid the pass through for Arnautovic's fourth Premier League goal of the campaign 16 minutes from time.
"We know he's been injured. To perform like that and run like he did shows you he's working hard for the team."
Noble stressed that West Ham’s emphatic performance was for the supporters, adding: “That performance was fantastic for the fans. They've seen a couple of bad ones this season but there's been three now that have been really good.”
United have now recorded their worst start to a top-flight campaign since 1989, when a young Alex Ferguson faced the sack at Old Trafford.
Following another week of on-and-off-field tension with France international Paul Pogba, it remains to be seen whether Mourinho will survive to the end of the season like his predecessor did.