(Photo credit: Mike Frey-USA TODAY Sports)
World No. 2 Carlos Alcaraz of Spain rolled his right ankle and retired two games into his opening match at the Rio Open on Tuesday in Brazil.
Alcaraz, the top seed in the singles draw, was facing Brazilian wild card Thiago Monteiro in the first round. During the first game, Alcaraz returned a serve and began running laterally back to the middle of the court. Monteiro aimed his n
