TACOMA — Gymnastics is the only sport MacKenzie “Mac” Ridgway participates in at Union High School, and turning out this season for her high school team already is a highlight of her high school career. A club gymnast for years, she decided a break from the club scene was necessary and joined the Titans. Best decision ever, she said, because what she gained this winter goes far beyond what she achieved Saturday at the Class 4A event finals to conclude the state gymnastics meet. “I wanted to experience this and see what it’s like to be a high school athlete,” Ridgway said. “I’m so glad I did it.