Neither player was then about to capitalise on their birdie opportunities at the next.
Thomas Aiken and Martin Kaymer were hoping to gatecrash the last pairing’s party as both produced six birdies to move two strokes off the pace.
Meanwhile, Tommy Fleetwood closed in on a place in The 2013 European Tour International Schedule.
That honour is given to the top 119 on The Race To Dubai rankings and Fleetwood, needing a top 27 finish to guarantee his card for next term, positioned himself into a tie for sixth.
Earlier, reigning champion Hennie Otto broke Coetzee's course record with a 10 under par 62.