Lewis Tierney has signed a new three-year deal with Wigan.
The utility-back was out of contract at the end of the season.
But he has agreed to stay at his hometown club until the end of 2019, with an additional year option in the club’s favour.
Tierney has played 14 times this season, scoring five tries including two in Friday’s 22-18 win against Wakefield.
Coach Shaun Wane said: “Lewis has improved a greatly in the last few years and it excites me that there is still a lot more improvement to come.”
Tierney is thought to be the last out-of-contract player to secure his future.
Given he has not nailed down a starting spot, some thought he may have moved elsewhere.
But the 21-year-old said: “It is a huge achievement for me to agree this contract extension and I’m very happy to be staying at my hometown club.
“I’ve enjoyed the games that I’ve played this year and I’m really looking forward to what the future holds over the next few years as I look to push on to the next level.”
Tierney - son of legend Jason Robinson and step-son of Premier League referee Paul Tierney - joined Wigan academy at the age of 15 from Orrell St James, and made a try-scoring First Team debut the 33-32 win over Widnes in 2013.
He can play wing or full-back, and after spending a lot of 2014 and 15 on dual-registration at Workington he has forced his way into Wane’s plans this year.
Warriors rugby director Kris Radlinski said: “Lewis has proved to be a very valuable member of the squad. He has been very reliable and has come up with some big plays this season and has earned this contract extension.
“It is important that we reward and extend the contracts of players that we have developed. Watching players who we sign at the age of 14 or 15 progress into seasoned first team players is tremendously rewarding for everyone at the club.
“Lewis has achieved all of his short term goals and now is the time for him to really push himself and fulfil his potential. The extension of Lewis’ contract may not get all the headlines of a new player coming in but it is valued just the same by the club and we are thrilled with this deal.”