Crowne Plaza Invitational 2015: Leaderboard Scores and Highlights from Thursday

Not even a three-hour rain delay slowed down the scoring Thursday at the 2015 Crowne Plaza Invitational at Colonial Country Club in Fort Worth, Texas.

Four different players shot sparking six-under 64s to open up an initial lead in the first round, including Masters champion Jordan Spieth. In all, 25 players shot a three-under 67 or better, which set the stage for a dramatic finish over the weekend.

Here is a look at the leaderboard after Thursday's opening round.

Kevin Na seized early control of the tournament with a six-under 64 and shares the lead with Boo Weekley, Ryo Ishikawa and Spieth. Na tallied seven birdies and a single bogey on the day and demonstrated just how comfortable he is at Colonial.

He boasts four top-25 finishes in six starts at Colonial in his career but only has a single PGA Tour victory on his resume (from 2011). The good news is Thursday's round was a continuation of Na's impressive play at The Players Championship, where he shared the lead after two rounds and ultimately tied for sixth place.

LM Otero/Associated Press

The co-leader discussed his recent play, per Mike McAllister of PGATour.com: “If I keep putting myself in that position, I’m going to get some wins.”

Na will have to hold off Weekley and his red-hot putter if he hopes to win the Crowne Plaza Invitational. Weekley made all 12 of his putts from within 10 feet and also finished with a six-under 64. Justin Ray of the Golf Channel praised his putting:

The result was zero bogeys for Weekley on the way to a beautiful round.

Ishikawa also found his name at the top of the leaderboard with a six-under par, and he has plenty of momentum moving into Friday's round after two birdies on Nos. 8 and 9 to close Thursday. He also saved No. 17 with an impressive chip-in, as the PGA Tour passed along:

Ian Poulter was among the six-under par logjam near the end of his round Thursday, but he bogeyed the final hole and dropped to a tie behind the leaders. He would have tallied an even more impressive score if it wasn't for this unfortunate bounce on No. 8, per the PGA Tour:

While Poulter certainly represents a threat, the name that should strike the most fear in the rest of the leaders is Spieth. The former Texas Longhorn played mistake-free golf on his way to a 64, which is a problem for the rest of the field. The PGA Tour passed along some highlights from his round, while Kelly Tilghman of the Golf Channel pointed out that the hot start could spell trouble for his competition:

Spieth won the Masters and finished in second place at the Shell Houston Open and the Valero Texas Open. He is in the middle of a spectacular season, and golf fans saw Thursday's performance is probably a sign of things to come for the rest of this tournament.

With no Rory McIlroy in the field, it is difficult to envision anyone holding off the green-jacket winner over the weekend at Colonial if he continues to play bogey-free golf. 

LM Otero/Associated Press

The quick start was certainly important from a momentum standpoint as well since Spieth struggled at TPC and failed to make the cut. One impressive round may be all it takes to tap into the magic he demonstrated at Augusta.

One marquee name Spieth likely won't have to deal with Sunday is Adam Scott.

Scott won the Crowne Plaza Invitational a year ago but shot a lackluster two-over 72 Thursday with a crippling double bogey on No. 8. Scott only has a single top-10 finish in eight starts this season and looked nothing like the former world No. 1 who won this tournament in 2014.

Last year’s champion may not be much of a factor, but there is still plenty of star power looking for a charge at Colonial. Spieth will attempt to add to his incredible season, Na just wants that elusive second win on the PGA Tour, and Weekley hopes to maintain the hot stroke from the putter.

Golf fans are in for a thrilling tournament.