Marcelo Andrés Ríos Mayorga is a Chilean former world No. 1 tennis player. He became the first Latin American player to reach the top position on the Association of Tennis Professionals (ATP) singles rankings in March 1998, holding the spot for six weeks. He also held the top ranking in juniors. At 1.75 m, Ríos is the shortest man to hold the number 1 ranking in men's tennis.

The Italian Open is an annual professional tennis tournament held in Rome, Italy. It is played on clay courts at the Foro Italico, and is held during the second week of May. The tournament is part of the ATP Masters 1000 events on the ATP Tour and part of the WTA 1000 events on the WTA Tour. The two events were combined in 2011. Rafael Nadal has won the men's singles title a record ten times.