Plenty has been said about this week’s WGC-Mexico Championship at Club de Golf Chapultepec and the effect of the region’s 2,250m (7,700 ft) elevation.

The high altitude has been having a huge impact on driving distances, with some tests suggesting most players are experiencing around 15% gains in length.

World N0.1 Dustin Johnson took that statement to a whole new level this morning at the 322-yard par-4 first hole, opening his round with an eagle thanks to this monster TWO-iron off the tee:

It’s little wonder DJ’s currently the world’s best player with power and precision like that.

Johnson can lose his world No.1 spot if he finishes outside the top four to Rory McIlroy tomorrow.