Miomir Kecmanovic, the reigning champion of the Abierto Juvenil Mexicano, climbed 85 positions in the ATP World Tour rankings this past weekend after winning the Challenger of Suzhou in China.
He ended his junior stage as No. 1 of the ITF Junior Tennis after ascending last November to the top of the 18-and-under rankings in MexicoCity.

Photo credit: https://www.atpworldtour.com/…/challenger-spotlight-2017-su