When he pitched against the Nats in early April, Miller was whipping the ball ala Randy Johnson. Is his arm angle more overhand now?
Below is a shot from an MLB recap. Note that the right foot is going towards the plate rather then the 1b dugout (and is shortened up a bit), and that he's staying on top of the ball. Wiley completely broke his delivery down and rebuilt it in under a month. He's also the guy who turned Beckett into a pitcher, even got through AJ Burnett's thick skull for a while, and had Willis showing Cy Young stuff. Then, when Girardi came in, he wanted to bring in his own cronies, and the Marlins lost Wiley for a couple years under Kranitz (who did his best to destroy Willis and had him make his leg kick higher, turn his back more, and ruined the fluid delivery Wiley had built).
In his last 4 starts, Miller has given up 7 BB and Kd 26, held opponents to a .178 average in 25 innings. In his past 22 innings, he's given up 2 ER, and 4 in the 25 IP. The Marlins had Perry Hill as IF coach, and he provided 3 gold gloves (1B Derrek Lee, 2B Luis Castillo, 3B Mike Lowell) and Alex Gonzalez was always high on the list for SS. But Hill is the 2nd best coach the Marlins have ever had.