Leeds suffered only their second league defeat of the season as two Ryan Harley goals gave Exeter a richly deserved 2-0 win at St James' Park.
The League One leaders had only lost at Millwall - and at home to Liverpool in the League Cup - before their trip to Devon, but were stopped in their tracks by an Exeter side that were good value for their win.
Exeter started with intent and took just four minutes to open the scoring. Harley and Marcus Stewart combined to tee up Steve Tully and his brilliant cross was headed powerfully home by Harley six yards from goal.
The closest Leeds came in the first half was when Exeter's Richard Duffy inadvertently headed towards his own goal, but the Welshman reacted quickly to hack the ball off the line.
Stewart and Adam Stansfield both went close with headers for the home side and Harley was off target with a shot from distance as Exeter ended the opening period strongly.
Leeds upped the tempo after the break and Exeter had goalkeeper Paul Jones to thank for saving well from Jermaine Beckford.
However, Simon Grayson's men were undone on the break with eight minutes remaining as Harley lashed a shot into the top corner from 25 yards with Casper Ankergren rooted to the spot.
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