Meanwhile, Vicente del Bosque -- whose Spain side became the first team to successfully defendthe European Championship -- was named Coach of the Year.
But the Sonar crew finished strongly to secure overall victory and give Robertson the honour of becoming the first skipper in the history of the class to defendthe world championship.
Watson, who will defend his Masters title when the first major championship of 2013 gets underway in April, is on seven-under, four off the lead, but says Johnson is in top form going into the last day.
Three-time major winner Mickelson was due to play at the Byron Nelson Championship starting on Thursday and defend his title at Colonial next week -- but has withdrawn to be alongside his wife, Amy.