Lamb played 21 games for the Knights during the 2017 season. On 9 July, during a close game against the Canterbury-Bankstown Bulldogs, Newcastle were given a penalty in the final seconds of the game with the score at 20-18 in favour of Canterbury. The first choice goal-kicker Trent Hodkinson handed the ball to Lamb to give his side the chance of sending the game into golden point extra time by kicking the goal. Lamb missed the conversion and Canterbury won the match, after the game Hodkinson was questioned as to why he gave the kick to level the game to Lamb. In the aftermath of the loss, Lamb was mocked on social media for his missed conversion attempt.