Complex sentence: Upon his return to Carlson's school, Gracie trained and influenced Rickson, Royler, Rillion, Crolin, and Carlos Gracie, Jr. Gracie competed in many tournaments in various martial arts styles including sambo and wrestling.
Split into simpler sentences: Upon his return to Carlson's school, Rolls trained and influenced Rickson Gracie, Royler Gracie, Carlos Gracie, Jr., Rillion Gracie, and Crolin Gracie. Rolls competed in many tournaments in various martial arts styles including sambo and wrestling.