Exploring Optimal Fastball Traits Through the Approach of Luis
Luis Castillo has found slider-like pitch that's worked as of late
Mariners' Luis Castillo goes viral for throwing 47 straight
The Reds are counting on Luis Castillo - Beyond the Box Score
Luis Castillo strikes out eight in Reds' win over Marlins
Mariners Acquire Luis Castillo - MLB Trade Rumors
Detroit Tigers RHP Luis Castillo's unusual arm slot earns him callup
Luis Castillo gives up three home runs in loss to Red Sox
Castillo strikes out 8, surging Mariners drop A's 5-1
Reds pitcher Luis Castillo is most coveted starter on trade market
Castillo catches Trout fishing on a Slider in the other batters