Jelonch is a French No. 8 that represents French TOP14 club Castres and was selected into the 2017 U20 Six Nations squad.
He was included in the French squad for the 2017 tour to South Africa.
His performances at the tournament secured his spot in France's squad for the 2018 Six Nations.
As of the 2018/2019 Champions Cup, Jelonch has had 7 European Cups appearances scoring 1 try and 5 points.
He currently has two international caps.
|2015 - present|
|2017 - present|
|2015 - 2016|
|2017 - 2018|