‘Cartoonishly good’: Chatwood’s stuff is evolving

On a frigid afternoon in Denver, Kyle Schwarber wouldn’t let sleet bombard what he’d been looking forward to. Schwarber, the Cubs’ third catcher in case of emergency, would be the backstop for that day’s bullpen session, in part to maintain receiving repetition, but to also see first-hand what the Cubs like so much about right-hander Tyler Chatwood, whose day it was to throw.