Gyroball
From MLB Power Pros Wiki
The blue pitching ability, Gyroball, gives the pitcher's 4SFB a football-like spin and slight downward movement. The exact quote is "The pitched ball spins like a gyroscope, making the ball appear to be moving faster".
The characteristics of the pitch (late life and slight drop near the plate) suggests that the in-game Gyroball is of the four-seam variety. The on-screen animation also shows four seams rotating parallel to the ground, the definition of a four-seam gyroball [1].
The Gyroball ability can be acquired at random in the following events: