The Affiliate Cup was won by CrossFit Mayhem Freedom from Cookeville, Tennessee, captained by four-time individual men's champion Rich Froning Jr. who moved to team competition this year.

Ben Smith, a Games competitor every year since 2009, won for the first time (he placed third in 2011 and 2013), having secured the win only in the final event by holding off 2014's second-place finisher Mat Fraser who many had predicted would be the 2015 champion.

[3] Approximately 273,000 participants signed up for the 2015 CrossFit Games Open, which was held over the course of five weeks from February 26 to March 30, 2015.

[6] In 2015, a scaled division was introduced in the Open, allowing athletes to choose easier versions of the workouts to suit their ability.

[7] This year the CrossFit Games also added a Teenage competition to the Open in two age groups (14-15 and 16-17) for boys and girls.

The top 20 Masters men and women in each age group were invited to participate at the Games.

As in previous years, the men's and women's competitions were similar, with the only differences being weights of lifted objects, heights of obstacles, etc.

Elements introduced for the first time this year included open-ocean paddleboarding and peg board climbing.

For the fourth straight year, the CrossFit Games began on the Wednesday before the traditional weekend events.

for the women): Murph is named after fallen sailor US Navy SEAL Lt. Michael P. Murphy, and it is usually performed by American affiliates on Memorial Day.

The event was held on a very hot afternoon at the Games, and the heat caused problems for a number of athletes such as Kara Webb and Annie Thorisdottir.

The event took place on the soccer field and started with flipping a weighted box called a "pig".

The box weight was 560 pounds for the men and 395 for the women, and the length was over 6 feet, making the flips more difficult than shorter objects that many athletes had trained with.

Fraser struggled in flipping the pig, which led to his failure to finish the legless rope climb.

A thruster in CrossFit is a combination of a front squat and push press in one continuous movement and the weights were 165-pounds for the men and 115-pounds for the women.

Mat Fraser finished second, which gave him an overall lead of just two points in front of Ben Smith going into the final event.

Ben Smith finished fourth but well before Mat Fraser, thereby emerged the overall winner of the 2015 Games.

Top ten teams advanced to compete after the Tire Relay event on the final day.