All information from Games.CrossFit.com:
“The introduction of the scaled versions of Open workouts in 2015 allowed more people to compete, which is what the Open is all about.
A few things to note about Open scaling:
An athlete may finish the Open with a final ranking determined by a combination of scaled and prescribed workouts.
An athlete who chooses to perform a scaled workout will be ranked on the Leaderboard relative to all other athletes who performed the scaled version of that workout but below all athletes who performed the workout as prescribed.
If an athlete performs any workouts as prescribed, he or she will remain on the competitive Leaderboard.
The Open also features a scaled-only Leaderboard. In order to remain on the scaled-only Leaderboard, an athlete must perform all the Open workouts scaled.
An athlete’s score from a scaled workout cannot contribute toward a team’s score. However, an athlete who performs scaled workouts is still eligible to participate on his or her affiliate’s team as long as the athlete meets all the eligibility requirements.”