In a high-stakes game against a fellow first-place team, this was the exact kind of performance the Phillies envisioned when they acquired Durán.

Baseball fans in Philadelphia have never seen anything like this. Jhoan Durán, fresh from the Minnesota Twins, left his mark at Citizens Bank Park with a record-breaking pitch. His 103.3 mph fastball not only secured the Phillies' victory over the Detroit Tigers but also set a new speed standard at the stadium.

The pitch was fouled off, but Duran struck out Greene to end the game on the following toss, a 102.5 mph heater that set a record as the Phillies’ fastest game-ending strikeout since the pitch tracking era began in 2008, according to MLB’s Sarah Langs. In the same at-bat against Greene, Duran also threw a 102.7 mph fastball.

Duran could not have made a better first impression. He's retired all six batters he's faced, breaking Phillies records in the process.

New Phillies closer Jhoan Duran had a long day. Then he stepped on the mound at Citizens Bank Park and everything happened quickly.