Castleford won their eighth successive game against Leeds with a 38-24 victory against their near neighbours at the Mend-A-Hose Jungle.
The damage was done in the first half with five unanswered tries putting them 30-6 ahead at the break.
Brian McDermott’s side came back in the second half but they were never close enough to trouble Cas who extended their lead to 12 points at the top.
Despite the win, Tigers fans will be worried by the sight of star full-back Zak Hardaker limping from the field near the end of the second half following a Matt Parcell try.
It was Leeds who struck first when Kallum Watkins evaded the tackle of Michael Shenton to score in the corner.
But that was as good as it got for the Rhinos with the hosts running riot in a scintillating 25-minute period.
The first was scored by try machine Greg Eden before Ben Roberts sliced through to go over the line untouched.
Jake Webster then powered over with former Rhinos forward Alex Foster grabbing another four-pointer minutes later, stretching out to touch down despite the presence of three defenders.
The game started to resemble the sides previous meeting at the Jungle in the final few minutes of the half as Roberts latched onto a Gale grubber for his second, with Gale adding his fifth conversion to make it 30-6.
Hoping to avoid further embarrassment, Leeds started the second half well as Jamie Jones-Buchanan managed to score from the scrum base but Greg Minikin hit back for Cas after a great offload from Webster.
Then came a spell of what seemed like endless Leeds pressure, with numerous penalties finally leading to Matt Parcell scoring their third try.
Unfortunately following the try, Tigers’ full-back Zak Hardaker suffered an injury and he hobbled from the field to jeers from a section of the visiting fans.
As the clock ticked down, Gale took the opportunity to kick another penalty to take the lead out to 38-18 and put the result beyond doubt.
On the hooter Leeds added a consolation try through Mitch Garbutt, with Watkins conversion making the final score 38-24.
Castleford: Hardaker, Minikin, Webster, Shenton, Eden, Roberts, Gale, Sene-Lefao, McShane, Massey, Foster, McMeeken, Milner. Interchange: Millington, Moore, Springer, Patrick
Leeds: Walker, Briscoe, Watkins, Sutcliffe, Hall, McGuire, Lilley, Garbutt, Parcell, Singleton, Ward, Jones-Buchanan, Cuthbertson. Interchange: Mullally, Keinhorst, Ablett, Delaney.
Referee: Jack Smith