How Chicago Cubs’ Ethan Roberts developed a nasty slider — and ‘exceeded whatever your loftiest expectations can be’
Shortly before big-league camp broke three weeks ago, Chicago Cubs pitcher Ethan Roberts tried using a new grip for his slider. The suggestion came from assistant pitching coach Daniel Moskos. Given Roberts’ natural supinated wrist position for his fastball release and how well the right-hander can spin a baseball, Moskos thought Roberts’ slider wasn’t his…
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