One of the keys to winning the U.S. Open? Staying out of the rough, typically the most talked about thick stuff of the season.

Alas, it's a safe bet that every player in this week's field will wander a bit from Olympic Club's fairways and greens. 

Robert Rock stonewalled one of golf's strongest fields at the Abu Dhabi Golf Championship this weekend, trusting a Titleist Pro V1x golf ball to the biggest win of his career.

Rock closed with a 2-under 70 at Abu Dhabi Golf Club for a 13-under 275 total…