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Originally Posted by tgmer
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This may be a stupid question. Since Trevino has put tape on his left thumb, this can assist the sensing of the pushing on the left thumb #1 pp, is this legal? Since this is a kind of assistance or training aid. If it is leggal then why those specify glove is illegal?
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My hypothesis is that Trevino puts the tape on his thumb to keep the glove from wearing out in that spot. I find that hitters wear that spot out more than most.