It dipped to 95.57 mph in ' 15 and 94.01 mph in his first season with the Rockies .
McGee 's knee issues diminished his calling card -- a four - seam fastball that averaged 96.25 mph through 2014 .
It dipped to 95.57 mph in ' 15 and 94.01 mph in McGee 's first season with the Rockies .
McGee 's knee issues diminished his calling card -- a four - seam fastball that averaged 96.25 mph through 2014 .