|Birth Place||São Gonçalo - RJ|
|Clubs||Sada Cruzeiro and São Bernardo|
2021/22 is Isac’s 9th season playing for Sada Cruzeiro.
He is four-times World Champion (2021, 2016, 2015 and 2013), six-times South-American Champion (2020, 2019, 2018, 2017, 2016 and 2014), five-times Superliga Champion (2017/18, 2016/17, 2015/16, 2014/15, 2013/14), among other titles with Sada Cruzeiro.
With the Brazilian team, Isac competed in Tokyo 2021 and was champion of VNL and South American Championship in the same year. He was champion of the World Cup in 2019 in Japan, silver in the World Championship in 2018, silver in the World League in 2013 and won the World Youth Championship in 2009.