Wayne Rooney admits his recent disciplinary problems left him feeling 'tense' upon his return to the Manchester United starting line-up.
The England striker was punished Sir Alex Ferguson following a breach of team regulations on Boxing Day after the club's resounding win over Wigan.
Rooney was subsequently left out of the next match with Blackburn - which United lost - and was also fined for his actions, along with teammates Darron Gibson and Jonny Evans.
The 26-year-old was, however, restored to first XI for last week's game with Newcastle, but appeared far from his normal self in a humbling defeat at St James' Park.
And, says Rooney, he had to accept the disciplinarian approach of Ferguson, but the issue did have an affect on his on-field performance against the Magpies.
"I accepted it. But I was tense when I got back on the pitch and I believe it showed," he told La Republica.
"In a dressing room, between players, between us and the manager, between us and loads of people who don't seem to matter. It's constant and harsh sometimes."
Rooney has, however, put any differences with his employers behind him, and responded in fine style on Sunday - bagging a brace against Manchester City in the FA Cup.