St Helens coach Royce Simmons says centre Jamie Foster's ability to kick points is vital to the Saints.
They are two points behind Super League leaders Warrington after Foster, 20, scored two tries and kicked four goals in Friday's 28-16 win over Crusaders.
Simmons told BBC Radio Merseyside: "If you're getting fours, you're still inviting the opposition into the game.
"The way [Foster] can turn four points into six, he can break the heart of another side through that."
St Helens were boosted before the game by the return from injury of Jonny Lomax and Lee Gaskell.
Simmons says the versatile Lomax, 20, has shown he has this season added the strong defence to his list of attributes.
"We've had to use Johnny Lomax, who was the back-up full-back at the start of the year, as one of your major half-backs," Simmons added.
"Johnny certainly attacked the game. We always know he is a good attacking footballer but I thought his defence against the Crusaders was fantastic."