Hynes’ teammates refer to him as “Skip,” as in “Skipper,” a joking reference to the colloquial name for the captain of a baseball team. During his first at-bat in a recent league game, which ended in a base hit, a friend cheered him on and called him “Big Cat,” a nickname from high school. He hadn’t been called that in years, he said, and his high school coach at St. Ignatius in University Village gave the nickname to him. He was a catcher in high school, and catchers are supposed to have quick, catlike reflexes. But Hynes didn’t, he said, so it was another lighthearted quip.