Scores remained low Friday on the Isle of Enchantment, where James Driscoll posted an early number that proved to be enough to take the 36-hole lead. Here's how things look after two rounds of the Puerto Rico Open, where Driscoll holds a slim advantage as he seeks his first career win:
What it means: Driscoll has a penchant for going low, and did so again Friday morning in Puerto Rico to take the lead at the midway point. He'll play in the final pairing Saturday alongside Hadley, who won the Web.com Tour Championship last fall and has gotten his rookie season off to a strong start, with a pair of top-10 finishes already to his credit through 10 starts.
Round of the day: Driscoll made the most of his walk around Trump International Friday, carding seven birdies and an eagle without dropping a shot. It marks the third time this season that Driscoll has fired a 63, and the effort earned him a share of the course record - although he already had that distinction from a 9-under 63 in the first round of this event in 2011. He'll look to maintain the momentum, as each of his prior 63s this season failed to net a top-10 finish.
Best of the rest: It's been 13 years since David Toms won the PGA Championship, but the veteran showed Friday that he can still go low on occasion. Toms notched nine birdies against just one bogey during the second round, playing his way from near the cut line into the top 10. The 47-year-old will begin the third round at 8 under, four shots off the pace as he looks to win for just the second time since 2006.
Biggest disappointment: Matt Jones has played some solid golf this season, with a recent streak of seven straight made cuts that included a pair of top-15 finishes. The Aussie saw his stay in Puerto Rico cut short, though, when he ballooned to a 4-over 76 Friday to miss the cut by five shots. While many players were going low Friday, Jones stumbled while carding four bogeys and a double bogey against just two birdies.
Main storyline heading into Saturday: As expected, the leaderboard at this event is dotted with names for whom a win would be a career-changing achievement. Driscoll has notched a pair of runner-up finishes since 2005 but has never won, while Hadley is just a handful of starts into his rookie campaign. Axley, meanwhile, sits just two shots off the pace and, while he does have a victory under his belt from 2006, he hasn't cracked the top 10 on the PGA Tour since the 2008 Reno-Tahoe Open.