Bill Haas on course to defend Northern Trust Open title after third round 64
By Mark Kendall - Twitter: <a href='http://bit.ly/qksrCX' class='instorylink'>@SkySportsMK</a>
Sunday 17 February 2013 18:14, UK
Bill Haas is on course to defend his Northern Trust Open title after shooting a superb 64 to open a three-shot lead over the field heading into the final round.