Chicago Cubs at spring training on Catalina Island, CA

The video discusses the Chicago Cubs as the National League champions of 1935, highlighting their training activities in Catalina Island, California, before their spring training trip. It also focuses on Charlie Root, a veteran pitcher, and his contributions to the team.

What does the term 'spring training trip' refer to in the context of baseball?

Who was the veteran hurling for the Chicago Cubs mentioned in the text?