[1] During his college years, Sacksen trained to become a modern pentathlete with a slight experience in fencing and shooting, and eventually participated in local and international competitions, including the 2007 South American Championships, where he won a silver medal.

Sacksen made his official debut at the 2008 Summer Olympics after receiving and accepting an invitation by UIPM, competing in the men's modern pentathlon, along with Eli Bremer.

[3] After the 2008 Summer Olympics, Sacksen continued to improve his athletic performance, yet he achieved more top-ten finishes in the World Cup circuits for the individual and team-relay events.

He finally attained his best result in his sporting career, when he finished sixth at the 2011 Pan American Games in Guadalajara, Mexico, which gave him an automatic qualifying berth for the next Olympics.

Unable to compete at the World Championships, because of a severe ankle injury, Sacksen landed to thirty-eight place, and missed out of the national team for the 2012 Summer Olympics in London, England.