Mary Cain, U.S. 1,500m champion, withdraws with a calf injury.
Mary Cain wins women's 1500m final for second-straight year.
17-year-old Mary Cain wins women's Wanamaker Mile.
Bernard Lagat going after American, world records in rarely run 2,000m event.
The 17-year-old broke her own world junior record in the 1000m.
Also competing will be Alan Webb, who is retiring from professional running to focus on triathlon
The 17-year-old Cain took nearly a second off the previous mark.
The high school senior finishes on the podium at the NYC Gotham Cup
The 17-year-old high school senior turned professional last year and is now coached by Alberto Salazar.
Take a look back at the exciting 2013 season and see who we named the top runners of the year.