It was 30 minutes after Duran left the mound, and the Phillies readied to head home. Taijuan Walker sat at his locker and whistled Duran’s warm-up song. Duran overheard him and smiled. A few minutes later, Alec Bohm whistled it as he left the clubhouse.

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.

While several teams made additions at the MLB trade deadline, perhaps no team made as big an addition as the Philadelphia Phillies.  The Phillies, who