Huddersfield claimed a three-point lead at the top of Super League with an impressive and psychologically important 30-12 win over title rivals Wigan.
Tries in the second half from Brett Ferres, Scott Grix and Aaron Murphy saw the Giants pull away to land a potentially crucial blow in the race for the League Leaders' Shield.
The sides had matched each other in the first period with a Wigan side lacking Sam Tomkins scoring through Sam Powell and Josh Charnley - his 39th try of the season - and Huddersfield responding through Murphy and Jason Chan.
It was Huddersfield's fifth win in six visits to Wigan and answered questions over their big game temperament, although the Warriors - Challenge Cup finalists this month - live to fight another day.
Leeds consolidated fourth spot in the table with a 42-16 victory at second-bottom Salford.
Kallum Watkins scored two touchdowns and skipper Kevin Sinfield kicked seven goals as many seven attempts for the Rhinos who have now won the last 10 clashes against the City Reds since their shock Headingley defeat in 2009.
Francis Meli bagged a double as St Helens ran in seven tries in a 38-10 win over bottom-placed London Broncos.
Saints were in control from start to finish and the poor Broncos offered little by way of a reply, with just Daniel Sarginson and Iliess Macani crossing for tries.
Adam Swift, Louie McCarthy-Scarsbrook, Tom Makinson, Anthony Walker and Jonny Lomax also scored for Saints.