The Open Championship : Oosthuizen Chases Down Morikawa To Lead At Halfway Point

Former Champion Louis Oosthuizen chased down American pace-setter Collin Morikawa to take a two-stroke halfway lead at the open Championship with a sizzling five-under 65 under cloudless skies.

Early starter Morikawa tore up the Royal St George's links with a superb six-under 64 to storm three shots clear before overnight leader Oosthuizen had even started his second round.

But with the course becalmed by light winds, Oosthuizen made scoring look even easier with four birdies and an eagle to storm to the top of the leaderboard on 11-under and at 129 -- the lowest 36-hole total in open history.

The South African blotted his copybook with a bogey at the par-three 16th -- his first of the tournament so far.

Open debutant Morikawa heads into the weekend on nine under with Jordan Spieth, the 2017 Champion, in third place on eight under after a round of 67.