Scores remain low in Las Vegas, where a PGA Tour rookie is on the verge of his first victory. Here's what You Oughta Know heading into the final round of the Shriners Hospitals for Children Open, where Jimmy Walker trails Brett Stegmaier by two shots:
• Walker continues to be king of the fall slate, after a win at the 2013 Frys.com Open and a T-4 finish last year at TPC Summerlin. He is again in contention for a win, which would be his sixth over the last 24 months.
• In addition to last year's title contention, Walker's record in Las Vegas includes a T-10 finish in 2012 and a T-12 in 2013. Thirteen of his last 15 rounds in Vegas have been in the 60s.
• Walker trails Stegmaier, who is making only his fifth career PGA Tour start. Stegmaier will be playing in the final round for the first time, and his best result is a T-74 (MDF) finish at last week's Frys.com Open.
• In search of his first win, Morgan Hoffmann sits one shot off the pace. Hoffmann held the 36-hole lead at the Arnold Palmer Invitational before finishing fourth. His best career result is a third-place finish at the 2013 BMW Championship.
• The contenders also include a pair of players who won opposite-field events last year: Alex Cejka, who won the Puerto Rico Open, and Nick Taylor, who won the Sanderson Farms Championship. Both trail by three.
• Each of the last four 54-hole winners have gone on to win at TPC Summerlin. The last player to win when trailing at the start of the final round was Jonathan Byrd, who erased a one-shot deficit en route to a playoff win over Martin Laird and Cameron Percy.
• This event has a penchant for producing first-time winners. Nine of the last 13 champions in Sin City have made this their first PGA Tour victory, including last year's winner, Ben Martin.