Corey Kluber pitching mechanics (GIFs)

Sinker

http://i.minus.com/ibtnCj1I5JfNgy.gif

Slider

http://i.minus.com/iDSUNpVvev3PB.gif

Another slider

http://giant.gfycat.com/ElaborateDeliciousBufeo.gif

Curve ball.

http://giant.gfycat.com/EasyMiserlyDartfrog.gif