 At the 2014 Maria Lenk Trophy in São Paulo, Santana broke the Junior world record twice in the 100-metre freestyle, with a time of 48.85 in the heats and 48.61 in the final.He qualified for the 2014 Pan Pacific Swimming Championships, but decided not to participate in this tournament due to the 2014 Summer Youth Olympics.At the Brazilian Junior and Senior Swimming Championships in May 2014, he broke the Junior world record in the 100-metre freestyle again, with a time of 48.35, the sixth best time in the world in 2014 in the event.