Imanaga's 4-seam has only average velocity but thrives up in the zone thanks to a low release and high spin.
Hitters perceive 'rise,' so even in-zone high pitches draw fouls and whiffs.
He throws it 44.5% of the time yet limits the BAA to .163.
Setting it up top then finishing with the splitter is Imanaga's bread-and-butter pattern.