Only caught the last hour, but what a rollercoaster ride for Sheffler during that time, capped off with his pull hook into the thick bushes on 18, but after taking a penalty stroke for an unplayable, he striped a 3-iron from 240 to just off the green only making bogey. 3 strokes up on Smith after 3 rounds with Im 5 strokes back and Lowry/Schwartzel at 7 back, so unless Sheffler completely implodes, I think this is a 3 man race (5 at most). Winds should be light and temps in the low 70s for the leaders, which probably makes an implosion less likely - unlike today's tough conditions.