Sheffield coach Mark Aston says Championship leaders Leigh are starting to crack.
They did have to hold off a fightback from the Rams though, who had trailed 22-6.
Aston was speaking after watching his side lose 46-12 to Bradford, who he has backed to earn promotion this season.
He said: “I think Bradford played the best they have all season.
“Having seen that it would certainly be very close between Bradford and Leigh, because Leigh are starting to crack.
“Bradford are going this way and Leigh another. At the moment, Leigh are probably a tad in front of them.
“But, by the end of the season, who will get promoted? I think you would probably put your house on it being Bradford.
“It is interesting because Bradford are hitting form at the right time.
“Lee Gaskell is the best half-back in the competition, without a shadow of a doubt.
“It is credit (to Bradford) that he is still here and that they have kept him.
“There are some great players here and some good young kids. It is only a matter of time before it all clicks.”
Sheffield currently sit third in the Championship table, and Sunday’s defeat to Bradford was only their third league defeat of the season.
Leigh, Bradford and Featherstone currently occupy the other three places.