He became world champion on May 21, 2016, defeating long-time holder Robert Fahey 7 sets to 2 at Riviere's home court, the National Tennis Club, Newport, Rhode Island.

Riviere regained the title from Fahey at the 2022 World Championship played at Prested Hall in Feering, Essex, England, winning by 7 sets to 5.

Over the next three years Riviere would continue to rise in the rankings to #2 in the world, and won his first major tournament, the U.S. Open, in Philadelphia on March 1, 2009.

Since returning to a touring professional state Camden has accumulated a mass of titles and on September 1, 2013, became the #1 ranked player in the world.

In February, Camden defended his US Open Singles and Doubles titles, winning both for the third consecutive year in a row, as well as extending his lead as the #1 ranked player in the world.

Following the WCD, Camden successfully defended his US Professional Singles title, winning the tournament for the 6th consecutive year in a row, and in the process completing an undefeated 2014/2015 season.

This would mark this end of his season though, as a reoccurring shoulder injury forced Camden to take the remainder of the year off in order to do physical therapy.

2016 could go down as Camden's best year yet, winning his 4th consecutive (and 5th overall) US Open Singles and Doubles titles, and in late May becoming the Real Tennis World Champion.

[5] In April 2018 in the first defence of his World Championship title, Riviere lost to former champion Robert Fahey by 7 sets to 5 at Queen's Club, London.