Zack Greinke sits on grass, throws 54 mph pitch
World Series: Astros' Zack Greinke records historic pinch-hit
Zack Greinke threw a 54 mph pitch that had the Padres hitter smiling
Astros' Zack Greinke told batters his pitches during win over San
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51 MPH PITCH! Astros' Zack Greinke lofts slow pitch in for the
What's up with Astros' Zack Greinke signaling his own pitches?
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Astros pitcher Zack Greinke oddly flashed a sign before A's Ramón