Cool breezes and damp conditions again greeted players Friday along the Monterey Peninsula, where the AT&T Pebble Beach National Pro-Am got back on schedule. Here's how things look at the halfway point, as a pair of players already with some high finishes this season sit atop the leaderboard:
What it means: Walker and Spieth are no strangers to recent success, as the former has already won twice in 2013-14 and the latter held 36-hole leads at both Kapalua and Torrey Pines. They'll now look to outduel each other over the weekend, while Mahan remains in the mix as he looks to win for the first time in nearly two years.
Round of the day: Playing Friday at Monterey Peninsula, Ryan Palmer notched six birdies and an eagle en route to a 5-under 66 that served as the day's low score. A runner-up last month at the Humana Challenge, Palmer effectively bounced back from an even-par opener at Spyglass Hill and now is in position for his third top-10 finish of 2014.
Best of the rest: Mahan tackled Spyglass Hill during the second round and fired a 4-under 68 that included six birdies. Well rested following a lengthy offseason, Mahan notched a top-10 finish last week in Phoenix and now appears poised to contend once more, with Monterey Peninsula - the easiest of the three courses in rotation - awaiting him Saturday.
Biggest disappointment: After an opening 68, Jason Day appeared ready to contend this week, but following his stumbles Friday at Pebble Beach, the Aussie is in danger of missing the 54-hole cut. Day made just one birdie during his second round, a 5-over 77 that dropped him outside the top 100. Now 2 over with Spyglass Hill on deck, it appears Day will be unlikely to replicate last year's sixth-place finish.
Main storyline heading into Saturday: Players will complete the third and final leg of this week's rotation of courses, after which the field will be trimmed to the top 70 and ties. The leaderboard includes plenty of players in search of a breakthrough victory, but the three names at the top are all proven winners. Spieth will look to make up for disappointing weekends in Maui and San Diego, while a third win for Walker could help secure him a Ryder Cup spot before the calendar flips to March.