DURHAM, N.C. — Between balancing academics, tennis, and career ambitions, junior women’s tennis student-athlete Eleana Yu has added another title to her growing list of achievements: Coca-Cola Campus Ambassador for Duke University. Yu, a native of Mason, Ohio, was first contacted by Coca-Cola through Instagram, which sparked her curiosity about the program. “I figured it looked kind of cool, so I applied,” Yu said. “I actually forgot about the application until I got an email inviting me to interview and then it all happened pretty fast after that.” After being selected as Duke’s sole campus ambassador, Yu traveled to Atlanta……