Santiago Casilla vs. John Johnstone — Career Comparison

The numbers give John Johnstone a clear advantage over Santiago Casilla across the core pitching metrics. John Johnstone led in walk avoidance (BB%+ 147 vs 100), strikeout rate (K%+ 109 vs 94), and run prevention (ERA+ 127 vs 117). Santiago Casilla held the edge in home run suppression (HR9+ 121 vs 82). John Johnstone was the better reliever — the numbers make that case clearly.