Athletic apparel maker Nike has a promotion out for the new year that’s going to be fun to watch, while tracking people’s personal New Year’s resolutions. Simply put, tennis great Maria Sharapova has challenged NBA star LeBron James to a run-off. The pair are seeing which one has resolved to run more miles in the month of January. If Maria wins, LeBron must serve as a ball-boy at a tennis match of her choosing. If he wins, she must serve as his personal water boy at an NBA game. Fans can track the stars’ progress at a special site NikePlus.com.Plus, NikeGo.com will donate $1 of retail product (up to $50,000) to support physical activity and sports programs to select Boys and Girls Clubs for every Resolution met during the Nike+ New Year's Resolution Challenge. This one sounds like a winner.