Canadian Track athlete Andre De Grasse, left, and Hua Wilfried, of the Ivory Coast, train at ALTIS, a world elite track and field training facility in Phoenix, Az., on February 2, 2016. When Andre De Grasse lines up against the world's fastest men at the Rio Olympics, it will be the punctuation mark on a season that was written in countless training runs down the track at a small college in Arizona.The 21-year-old swapped what was essentially a two-man training group at the University of Southern California to become just one of over 100 world-class athletes from 30 countries working with the Altis training centre in Phoenix. Training against the best in the world on a daily basis, he said, will stand him in good stead when he lines up in Rio. THE CANADIAN PRESS/Nathan Denette