Duran discovered the signature pitch by accident during a bullpen session in 2018. This season, he’s thrown the pitch nearly 40% of the time and is holding opponents to a .221 average.

Jhoan Duran finishes off 4-pitch save in his Phillies debut

Those four pitches were all splitters as Duran finished out a Phillies comeback victory over the Tigers to take the series opener -- and regain first place in the National League East. In one of the most electrifying games of the year, Duran stole the show in his debut.