Hull trio Jack Brown, Connor Wynne and Ben McNamara have signed new deals with the club.
The three Hull academy graduates have been rewarded with new deals at their hometown club, having impressed since breaking through to the first team.
Prop Brown, 20, and half-back McNamara, 19, have extended their time with the club by a further two years.
Full-back or centre Wynne, 20, has signed a one-year extension with the Airlie Birds with the option of a further 12 months, keeping him at the club until at leas the end of 2022.
Brown has made 23 appearances since making his first team debut in 2019, whilst Wynne has played 17 games having burst onto the scene in the same season.
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McNamara, the son of Catalans coach Steve, has made 12 appearances in Super League this year.
Hull coach Brett Hodgson said: “Connor Wynne has worked hard to fight his way into the first team, and has shown some real versatility in the fact he has played in several different positions throughout the year.
“He stood out at centre when he got that opportunity. He still has some work to go but he is doing everything he can to make himself in that first-team picture every week.
“Ben is probably the most professional young player I have ever seen. He trains hard every day and is always looking to improve, and he is constantly asking questions as to how he can get better.
“Browny unfortunately had his season shortened by injury, but he’s a local lad who is proud to play for the club, he has got good leg speed and bounces about like a pin-ball when he is out there. He has some good attributes that we are looking to develop.”