WGC-Mexico Championship: Bryson DeChambeau one ahead, Rory McIlroy three back

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Bryson DeChambeau in the second round at the WGC-Mexico Championship
DeChambeau carded seven birdies in eight holes during his eight-under 63
WGC-Mexico Championship second-round leaderboard
-11 B DeChambeau (US); -10 E van Rooyen (SA), P Reed (US); -9 H Matsuyama (Jpn), J Thomas (US); -8 R McIlroy (NI)
Selected others: -5 T Hatton (Eng), P Casey (Eng); -3 L Westwood (Eng), T Fleetwood (Eng); -1 D Willett (Eng), J Rahm (Spa), S Lowry (Ire); +5 D Johnson (US); +8 G McDowell (NI)

American Bryson DeChambeau carded an eight-under-par 63 to take a one-stroke lead at the halfway stage of the WGC-Mexico Championship.

The 26-year-old posted seven birdies in eight holes and leads on 11 under.

South African Erik van Rooyen equalled the course record on his 30th birthday with a nine-under 62 and shares second with Patrick Reed, who returned a 63.