DJ on top in Mexico

ALFREDO ESTRELLA / AFP

Things are heating up at the WGC-Mexico Championship

Dustin Johnson is on top of leaderboard at the halfway stage of the tournament. 

The American is a couple of shots ahead of two-time Omega Dubai Desert Classic winner Rory McIlroy and Matt Kuchar.

Meanwhile Sergio Garcia and 2017 Race to Dubai champion Tommy Fleetwood are four shots behind Johnson.

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