Oldham Athletic boss Lee Johnson praised his players for their professionalism in the 3-0 victory at Rochdale.Daniel Johnson's brace, either side of Jonathan Forte's penalty, secured bragging rights for the visitors in the Greater Manchester derby.
The result lifted the Latics into the Sky Bet League 1 Play-Off places and left Lee Johnson purring at the performance.
"I'm really delighted because I've just seen a very, very professional performance," he said.
"To be honest there wasn't much in the game until we scored, but we looked solid throughout and very strong.
"We had a good shape from start to finish, and we needed that because they never stopped running.
"It was a tough game in the end and maybe a 3-0 scoreline did flatter us a little bit given the state of the play.
"We limited them to very few chances, though. I don't really remember Paddy Kenny having a save to make. All down the spine of the side we were really strong - in mind and body."
Having dealt with Rochdale's early advances, Oldham grabbed the lead in the 24th minute.
Danny Philliskirk's clever pass caught the Dale defence square and sent Johnson through on goal. Conrad Logan raced off his line to block Johnson's first effort but the rebound ran kindly for the on-loan Aston Villa midfielder and he slipped the ball into the unguarded net.
Mike Jones was close to adding a second soon afterwards but saw his shot beaten away by Logan.
The closest Rochdale came to scoring in the first half came when Jamie Allen sent a vicious volley narrowly wide of debutant Kenny's upright.
But having seen a penalty shout waved away when Matty Lund appeared to be fouled by Joseph Mills, Rochdale then conceded a spot kick at the other end in the 72nd minute. Jack O'Connell clearly pulled Philliskirk's shirt and Forte slammed home his 13th goal of the season.
Philliskirk then squared for Johnson to slot home the third goal with 10 minutes remaining.
Rochdale boss Keith Hill said mistakes from his players had proved costly.
"I was pleased with the majority of the performance but we are making mistakes on the pitch and if you make mistakes like we have then you will be punished against a team like Oldham," said Hill.