Watched the presentation of USBC Masters, at end Walter took off , what looked like almost a soccer shin guard?? Anyone help out clarify what that was?

never seen a bowler wear one before...

i think u r talking about the thing walter uses on his knees, if u watched pba in the summer, u should find it.
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When a house bowler misses the mark, misses the break point and strike, for many ppl its called a wallshot. When a pro does that its call adjustment

When a house bowler gets his finger stuck in the ball and fall on the lanes, for many ppl its called lame bowler. When a pro does that its called the Machuga flop! ha i like this one.