MLB pitch clock: How Cubs, White Sox adjusting to new rules
23 for '23: How will the new MLB rules affect the Cubs? - Marquee Sports Network
Cactus League asks MLB to delay spring training due to COVID-19
Chicago Cubs get their first taste of the pitch clock in their Cactus League win. 'Pretty freakin' quick,' says Dansby Swanson. – Boston Herald
Sullivan: Cubs, White Sox adapting to new MLB rules, including the pitch clock
MLB's experimental rules in minors -- What we love, what we don't, and when are robot umps coming to the majors? - ESPN
How MLB's new rules looked on Opening Day - The Washington Post
Freeman mashes, pitch clock enters spotlight in Dodgers' spring opener, by Ron Gutterman
Players, managers react to first day with new rules