World number four Dustin Johnson increased his lead going into the final round of The Northern Trust after he shot a brilliant 64 in the third round at TPC Boston on Saturday. Johnson shot 60 on Friday and followed it up with another sparkling round of seven under-par, including a birdie-eagle finish in the last two holes. Johnson, looking for his second PGA Tour win since the resumption after lockdown, is on 22 under-par and leads Harris English and Scottie Scheffler by five. Former British Open champion Louis Oosthuizen is fourth on 14 under.