Wigan forward Stuart Fielden is tackled by Leeds Rhinos prop Luke Burgess during the Warriors' 24-4 win at the DW Stadium
Wigan produced a strong second-half performance to secure a hard-fought victory over injury-hit Leeds.
It took the league leaders until the 34th minute to break the deadlock, George Carmont slipping a tackle to give his side a 6-0 half-time lead.
Leeds hit back immediately after the restart as Ryan Hall punished an Eamonn O'Carroll knock-on to score.
But young winger Darrell Goulding went over twice either side of a Joel Tomkins score as Wigan stretched clear.
It was Wigan's seventh win in eight games, while reigning champions Leeds slipped to their fifth defeat - only one less than in the whole of last year's third successive victorious Super League campaign.
Both sides tackled ferociously during a fully committed, if error-strewn, first half, the physical nature of the contest resulting in Wigan using up seven of their 12 interchanges by the interval.
If anything, it was Leeds - without nine first-teamers including skipper Kevin Sinfield for a fourth straight game with a thigh injury - who looked the most likely to score before Wigan edged in front.
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