The leaderboard remains bunched in Dallas, but Louis Oosthuizen has a chance to win in the U.S. for the first time. Here's what You Oughta Know heading into the final round of the HP Byron Nelson Championship, where the South African shares the lead with Brendon Todd:
• Oosthuizen broke through to win the 2010 Open Championship at St. Andrews, but he hasn't won on the PGA Tour since. His best shot at a win on American soil came at the 2012 Masters, when he lost to Bubba Watson in a sudden-death playoff.
• Oosthuizen is known for having one of the sweetest swings on Tour, but contending this week still comes as a surprise. He has missed three of his last four cuts overall and his two prior Nelson appearances ended with a missed cut (2012) and a withdrawal (2013).
• A former national champion while at Georgia, Todd could become the latest former Bulldog to win on the PGA Tour this season. The list of former Georgia golfers in the winner's circle in 2013-14 includes Watson, Russell Henley, Harris English and Todd's friend and former roommate, Chris Kirk.
• Mike Weir begins the final round in a tie for third, one shot behind Ooosthuizen and Todd as he looks to win on the PGA Tour for the first time since 2007. After beginning the week No. 609 in the world rankings, the Canadian is in position for his first top-10 finish since the 2010 Humana Challenge.
• In addition to Weir, Graham DeLaet remains in contention (-8, T-6) as both look to end the Canadian drought on the PGA Tour. The last player from North of the Border to win was Stephen Ames, who claimed the now-defunct Children's MIracle Network Classic in 2009.
• Weir is not the only former major winner to revive his game this week. Padraig Harrington will tee off Sunday two shots off the lead as he looks to win for the first time on the PGA Tour since the 2008 PGA Championship.
• A total of 14 players will begin the final round within four shots of the lead, and the winner will almost certainly come from that group. The largest final-round comeback in the event's history is four shots - accomplished four times, most recently by Keegan Bradley in 2011.