2020 Zozo Championship leaderboard breakdown: Justin Thomas in striking position as other stars struggle

Rory McIlroy and Tiger Woods are among the list of big names who are at the bottom of the leaderboard

Round 1 of the 2020 Zozo Championship is in the books, and there is an unexpected name atop the leaderboard. Sebastian Munoz went out and shot a 64 on Thursday with two eagles to lead Tyrrell Hatton and Justin Thomas by one going into the second day at Sherwood Country Club.

Munoz's eagles came from a combined 220 yards away as he holed out on the par-4 7th hole and the par-5 16th hole. Somehow,he shot 64 -- the round of the day -- even though he made a double and two other bogeys. It's a great start in a stout field at the Zozo Championship. 

Here's a look at the rest of the leaderboard through 18 holes in Thousand Oaks, California.

1. Sebastian Munoz (-8): Munoz is on a nice run of three top 10s in his last six starts, including last week at the CJ Cup at Shadow Creek. He led the field in strokes gained tee to green on Thursday, so this is probably at least somewhat sustainable going into Round 2. It would be pretty awesome to see somebody with one career win take down a small-field, big-money event.

T2. Tyrrell Hatton, Justin Thomas (-7): J.T. closed eagle, birdie, birdie and shot 29 on the back to remind us that he does in fact dominate the PGA Tour in the fall. He's one of the few players in the world who has been hot in terms of his finishes, but he's playing below the level he normally plays. That normally means a win is coming at some point soon. Hatton stayed scorching after a win and a T3 in his last two starts.

T4. Lanto Griffin, Dylan Frittelli, Kevin Kisner, Harris English, Brian Harman (-6): Quite a crew here at T4, but I think English probably has the most staying power. He's been a top-five player in the world over the last three months. I am a bit concerned that he's the only player in the top 25 to lose over a stroke on his approach shots in Round 1.

T9. Justin Rose (-5): His Round 1 score may be a bit of fool's gold, although I did get excited early on when he took the lead because of what it could mean for Augusta National if you got in on him at 40-1 or 50-1. Depending on how the rest of this week goes, it's doubtful that he'll end up any higher than 30-1 to win this year's Masters.

T17. Jon Rahm (-4): Hit it wonderfully (other than this shank) and putted it terribly. That means a run is coming later in the week.

T64. Rory McIlroy (+1): I think Rory's iron play is officially a concern. He finished 72nd in the field in strokes gained on approach shots and snapped one of his irons coming up 18. He can flip the switch quickly, but he's not been hitting his irons up to his own standards since the restart.

T76. Tiger Woods (+4): The part I don't understand here is how he could look so good and hit the ball so poorly. Normally when Woods' irons are off -- he finished 75th in strokes gained on approach shots on Thursday -- it's because the body is not allowing him to do what he wants. And yet, it doesn't appear that there's anything wrong with him right now. A very strange opener for Woods.

[Oct 22, 2020 at 6:03 pm ET · Kyle Porter]

Tiger is all over the planet off the tee. He's just giving himself no chance whatsoever to score on a day when the average score is currently in the 60s.

[Oct 22, 2020 at 5:44 pm ET · Kyle Porter]

Sebastian Munoz has the Cat by 11 right now with a few holes to go. That's incredible. Tiger just made par on his last par 5 of the day. He's [checks notes] last in the field in strokes gained off the tee and on approach shots.

[Oct 22, 2020 at 5:21 pm ET · Kyle Porter]

Another bogey for Tiger, who moves to +3 on the day. He's currently 10 back of the leaders.

[Oct 22, 2020 at 5:20 pm ET · Kyle Porter]

Matt Fitzpatrick and Kevin Kisner both get it to -7. We're probably going to see something pretty low win this week given how soft these greens seem to be and how many par 5s there are.

[Oct 22, 2020 at 4:33 pm ET · Kyle Porter]

Sebastian Munoz has Tiger by 10 strokes through 10 holes. 2020, man, never ceases to amaze.

[Oct 22, 2020 at 4:13 pm ET · Kyle Porter]

Tiger had fewer looks from inside 30 feet (1) than he did from more than 350 feet (2).

[Oct 22, 2020 at 4:09 pm ET · Kyle Porter]

Not good.

[Oct 22, 2020 at 3:48 pm ET · Kyle Porter]

Tiger's swing looks great, but the results have not been very good. He just is not hitting it very tight right now and not giving himself any looks. His only birdie thus far came from 87 feet.

[Oct 22, 2020 at 3:39 pm ET · Kyle Porter]

Tiger bogeys No. 16 as well, and he plays the three par 5s on the back nine in 4 over. Not good!

[Oct 22, 2020 at 3:30 pm ET · Kyle Porter]

Justin Rose gets it to -6. If he wins (or even contends) this week, he'll be a popular play for Augusta, despite missing the cut last year.