SCOTTSDALE, Ariz. — White Sox pitchers Mike Clevinger and Michael Kopech have not appeared in Cactus League games yet but their work in side sessions and live batting practice on the backfields of Camelback Ranch has impressed manager Pedro Grifol.
Kopech, who had knee surgery at the end of last season, is slightly behind the other starters in his progression but is on track to be ready for the start of the season. Expanding his arsenal to a useful four-pitch mix is a top priority this spring.
