West Ham manager Sam Allardyce is infamously chummy with his Manchester United counterpart, Alex Ferguson.
But the longstanding friendship between the two managers counted for nothing last night, after the Hammers were eliminated from the FA Cup by United.
After the match, Allardyce bemoaned what he perceives to be the unfair treatment United receive from referees at Old Trafford.
Big Sam was especially peeved about the late penalty United were awarded for a handball by Jordan Spence.
Wayne Rooney ultimately fluffed the spot kick, but Allardyce was still angry that United defender Rafael had not been penalised for a similar incident earlier in the match.
And according to Allardyce, such incidents are common place at the Theatre of Dreams.
"You see it time and time again at Old Trafford," Allardyce said.
"There's no doubt about the difference between Rafael's handball and Jordan Spence's. Spence plays for West Ham and the away team, while Rafael plays for the home side at Old Trafford.
"With Rafael, the ball hits his hand but no penalty is given. With Jordan Spence, the ball hits his hand and it's a penalty. The incidents are the same. If you give one you've got to give both, simple as that."
"The ref did not see Rafael's handball because of his position," Allardyce added. "But he was in a worse position to see Jordan Spence's than Rafael's."