MILWAUKEE — Rowdy Tellez stayed calm long enough to deliver the kind of moment that produced bedlam from an adoring home crowd.

Tellez connected on a three-run homer as a pinch-hitter to put the Milwaukee Brewers ahead for good in the seventh inning of a 4-2 victory over the Pittsburgh Pirates on Wednesday afternoon.

“I think the hardest thing to do is remaining composed when you’re pinch-hitting, especially in a big situation like that,” Tellez said.

A fan base that has warmed up to Tellez ever since he came over from Toronto in a July 6 trade chanted his first name before and after his homer.

Tellez is batting .340 (18 of 53) with five homers and 16 RBIs in 21 games with the Brewers. He hit .209 with four homers and eight RBIs in 50 games with the Blue Jays.

He says he has benefited from getting more regular playing time since the trade.

The Brewers’ go-ahead rally started with two outs and none on.

Luis Urías fell behind 0-2 in the count but ended up walking when he took a 3-2 pitch that was just low from Kyle Keller (0-1). Manny Piña followed by hitting a ground-ball single that went off the glove of diving third baseman Ke’Bryan Hayes.

Pirates manager Derek Shelton then summoned left-hander Chasen Shreve from the bullpen to face the left-handed Tellez. Left-handed hitters had been hitting just .137 and slugging .176 against Shreve this season.