Sometimes a change in scenery can unlock the potential of a player. After being released by the Mets in 2018, Hansel Robles ascended to the closer role for the Angels last season. Robles went 5-1 with 23 saves, a 75:16 K:BB, a 2.48 ERA, 3.89 xFIP, and 1.02 WHIP. While many invested in Ty Buttrey winning the ninth inning role, Robles not only held on to the closer role, he surged as the season progressed. 

From June first until the end of 2019, Robles recorded a 1.52 ERA over 47.1 innings with a 40.8 ground ball percentage and .231/.267/.325 slash against. Of the 182 total batters faced in this sample, Robles owned a 27.5 strikeout percentage against a five percent walk rate, struck out 50 while walking nine leading to a 1.01 WHIP. Between August 21st and September 14th, Robles retired 27 straight hitters. 

Part of his success lies in adding what many sites label a change-up to his arsenal but with a split-finger grip. His bullpen coach, Andrew Bailey , encouraged Robles to...