Nicholas Thompson goes 2 feet deep in water to play this greenside shot from the hazard on the 17th hole on Saturday. Wait until you see the result.

Here’s a Kodak Challenge update from the morning wave Thursday at the Viking Classic:

-- Lee Janzen  and John Senden each posted birdies this morning on No. 18, this week’s Kodak Challenge hole , to join Troy Merritt in second place in the Kodak Challenge standings at 12 under. Senden narrowly missed carding an eagle with his 62-footer sliding a few feet past the hole.

-- Nicholas Thompson took advantage of the Kodak Challenge scoring rules to move up two strokes to 11-under with a birdie this morning. The Kodak Challenge records a player’s best 18 Kodak Challenge holes scores, but once a player has played more than 18 holes subsequent holes provide the opportunity to replace bogeys and pars on their Kodak Challenge scorecards with birdies. This can create a one, two, or even three-shot swing in a player’s score on just one hole.

-- Kodak Challenge contenders Troy Merritt, Tim Petrovic and Carl Pettersson will get a crack at the Kodak Challenge hole this afternoon. -- Chuck Beeler

So much for a lack of low scores in the afternoon, at least by a few players anyway.

Jason Day has moved to the top of the leaderboard at 6 under thanks to a pair of birdies (and no bogeys) through his first 10 holes.

Meanwhile, Charley Hoffman is now just one shot back after playing his first eight holes in 4 under with birdies on Nos 11, 13, 14 and 16. Those birdies come a lot easier when you rank in the top 5 in the field in driving accuracy, greens in regulation and putts per round.

Nicholas Thompson, though, has the best round going at 5 under through 15 holes. So far, Thompson has needed just 18 putts. He’s 3 under for the week. -- Brian Wacker

There’s only been one eagle so far today on the drivable par-4 15th hole (also this week’s Kodak Challenge hole) and it came courtesy of Nicholas Thompson (video below). Right now, the hole ranks as the seventh most-difficult on the course, which is easily the hardest it’s played all week. -- Brian Wacker

Not surprisingly, most of the low scores from the first round at TPC Southwind came in the morning wave, led by Lee Westwood’s 7-under 63. Sine then, there hasn’t been much of a move toward the lead. There are a few players not too far away, though.

Among them: Lee Janzen, Nicholas Thompson and Matthew Goggin, all of whom are 3 under on the day so far. Ian Poulter was at that number, too, but he just bogeyed No. 12 to drop a stroke. -- Brian Wacker