Update: Here’s Rodney last opening day. Note the glove height and angle:
Last night, during Fernando Rodney’s WBC appearance, former A’s and Cardinals pitcher and current ESPN analyst Mark Mulder tweeted that Rodney was tipping his pitches. Mulder’s explanation was that the height of Rodney’s glove gave away his pitch. Luckily Rodney pitched again tonight, and Mulder may have a point.
Jason Collette screencapped what appears to be the two differences between Rodney’s delivery on fastballs and changeups: The glove’s height and the timing of his hand break. Here are those parts of Rodney’s delivery on a fastball:
And here on a changeup:
There are a few questions worth asking before worrying too much about it. First: Can hitters pick up on either tell, and second: does he always do it? Of course it may not matter too much either way; it’s just something to keep in mind during the regular season.