Thank you to USA Swimming for providing this data – data is as per the USA Swimming database, 2007-Present
2026 NCAA Division I Men’s Swimming and Diving Championships
- Dates: Wednesday, March 25–Saturday, March 28
- Location: McAuley Aquatic Center, Atlanta, GA
- Defending Champions: Texas (1x)
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With his NCAA record of 42.61 in the 100 back final tonight, Hubert Kos moves himself even further ahead of the field in what is one of the more hotly-contested not-real swimming events – the 200 ButterBack.
The 100 fly and 100 back were historically on the same day at NCAAS, and were a common double – due in part to its popularity, the NCAA moved the 100 fly to before the 400 IM in 2024 to give swimmers doing both a little more time before the 100 back at the end of the session on day 3.
That likely was beneficial, but the two events are now on different days, with the 100 fly on day 2 and the 100 back on day 3. With more of a gap between the two, the 100 fly/100 back combo becomes even more attractive, as it did to scorers Hubert Kos, Scotty Buff, Aiden Hayes, Ruard van Renen, and Stuart Seymour this year.
While it is impressive to even be competing at NCAAs in both events, there are levels further – scoring in both, ‘A’ finaling in both, and winning both. As far as we can tell the latter has been achieved just three times – Tom Shields in 2012, Albert Subirats in 2007, and Jay Mortenson in 1988.Both Aiden Hayes and Hubert Kos were ‘A’ finalists in both events this year, with Kos just 0.05 seconds away from taking the title in the 100 fly.
Kos is the fastest swimmer of all time in the 100 back, sitting 0.61 seconds ahead of Florida’s Jonny Marshall thanks to the 42.61 Kos swam tonight. He sits as the #2 swimmer all-time in the 100 fly after finishing 2nd behind Josh Liendo in 42.54 last night, 0.26 seconds under Caeleb Dressel‘s former NCAA record of 42.80 and half a second ahead of the #5 swimmer ever, Virginia Tech’s Youseff Ramadan.
As you would expect, he sits a long way ahead of anyone else in the 200 ButterBack, 1.69 seconds ahead of Luca Urlando in second. The aforementioned Ramadan is 3rd, 2.59 seconds behind Kos’s 1:25.15 addup. Only those three are under 1:28, showcasing just how dominant Kos is.
Top SC Yards 200 ButterBack Swimmers (Mens)
Several of the top 15 swimmers are competing this week – Ruard van Renen is 7th, Ilya Kharun 8th (despite a 45.33 100 back time), Aiden Hayes 9th, Will Modglin 11th, Scotty Buff 12th, Owen McDonald 13th, and Michel Arkhangelskiy 15th.
Kos is one of the elite swimmers who is at the top of both events. With Josh Liendo not having a 100 back in yards on record, he is the fastest in both events of any swimmer in the ButterBack top 100.
200 Butterback Top 100 Swimmers – 100 Fly & 100 Back Times
This one may illustrate just how dominant he is – Kos is the dot in the top right-hand corner.
100 Fly vs 100 Back Times, Men’s 200 ButterBack Top 100
The full top 100 can be seen below:
| Rank | Swimmer | 200 ButterBack | 100 Fly | 100 Back |
| 1 | Hubert Kos | 1:25.15 | 42.54 | 42.61 |
| 2 | Luca Urlando | 1:26.84 | 43.49 | 43.35 |
| 3 | Youssef Ramadan | 1:27.74 | 43.15 | 44.59 |
| 4 | Coleman Stewart | 1:28.08 | 44.46 | 43.62 |
| 5 | Kacper Stokowski | 1:28.14 | 44.57 | 43.57 |
| 6 | Brendan Burns | 1:28.15 | 44.54 | 43.61 |
| 7 | Ruard Van Renen | 1:28.19 | 44.78 | 43.41 |
| 8 | Ilya Kharun | 1:28.25 | 42.92 | 45.33 |
| 9 | Aiden Hayes | 1:28.30 | 43.85 | 44.45 |
| 10 | Shaine Casas | 1:28.31 | 44.44 | 43.87 |
| 11 | Will Modglin | 1:28.40 | 45.14 | 43.26 |
| 12 | Scotty Buff | 1:28.52 | 43.67 | 44.85 |
| 13 | Owen McDonald | 1:28.60 | 44.62 | 43.84 |
| 14 | Tom Shields | 1:28.70 | 43.84 | 44.86 |
| 15 | Michel Arkhangelskiy | 1:28.85 | 44.36 | 44.49 |
| 16 | Nicolas Albiero | 1:28.86 | 44.32 | 44.54 |
| 17 | Harrison Lierz | 1:29.07 | 44.67 | 44.40 |
| 18 | Alvin Jiang | 1:29.10 | 44.50 | 44.60 |
| 19 | Stuart Seymour | 1:29.21 | 44.66 | 44.55 |
| 20 | Marcus Reyes-Gentry | 1:29.30 | 45.23 | 44.07 |
| 21 | Jordan Crooks | 1:29.32 | 43.77 | 45.55 |
| 22 | Albert Subirats | 1:29.40 | 44.57 | 44.83 |
| 23 | Marius Kusch | 1:29.41 | 44.32 | 45.09 |
| 24 | Matt Grevers | 1:29.43 | 44.94 | 44.49 |
| 25 | Leon Marchand | 1:29.44 | 44.67 | 44.77 |
| 26 | Michal Chmielewski | 1:29.50 | 44.42 | 45.08 |
| 27 | Adam Chaney | 1:29.50 | 45.86 | 43.64 |
| 28 | Destin Lasco | 1:29.66 | 45.73 | 43.93 |
| 29 | Jack Conger | 1:29.67 | 44.35 | 45.32 |
| 30 | Spencer Nicholas | 1:29.69 | 44.41 | 45.28 |
| 31 | Jordan Tiffany | 1:29.71 | 44.51 | 45.2 |
| 32 | Aaron Sequeira | 1:29.73 | 44.87 | 44.86 |
| 33 | Gabriel Jett | 1:29.75 | 45.21 | 44.54 |
| 34 | Kyle Peck | 1:29.76 | 44.74 | 45.02 |
| 35 | Ryan Hoffer | 1:29.82 | 44.24 | 45.58 |
| 36 | Dean Farris | 1:29.83 | 46.17 | 43.66 |
| 37 | Gabriel Fantoni | 1:29.88 | 45.18 | 44.70 |
| 38 | Matt McHugh | 1:29.98 | 44.91 | 45.07 |
| 39 | Tommy Janton | 1:29.99 | 45.41 | 44.58 |
| 40 | Ryan Lochte | 1:30.04 | 45.44 | 44.60 |
| 41 | Kaii Winkler | 1:30.04 | 45.42 | 44.62 |
| 42 | Brady Samuels | 1:30.04 | 44.87 | 45.17 |
| 43 | Luke Kaliszak | 1:30.09 | 45.18 | 44.91 |
| 44 | Raekwon Noel | 1:30.10 | 45.28 | 44.82 |
| 45 | Chatham Dobbs | 1:30.12 | 45.20 | 44.92 |
| 46 | Matthew Bittner | 1:30.17 | 45.19 | 44.98 |
| 47 | Mario Molla Yanes | 1:30.22 | 44.63 | 45.59 |
| 48 | Pavel Sankovich | 1:30.31 | 45.00 | 45.31 |
| 49 | Ksawery Masiuk | 1:30.32 | 45.02 | 45.30 |
| 50 | Clement Secchi | 1:30.33 | 44.96 | 45.37 |
| 51 | Ryan Murphy | 1:30.34 | 46.85 | 43.49 |
| 52 | Luke Barr | 1:30.36 | 45.34 | 45.02 |
| 53 | Cooper Morley | 1:30.36 | 45.62 | 44.74 |
| 54 | Connor Foote | 1:30.36 | 44.34 | 46.02 |
| 55 | Eugene Godsoe | 1:30.38 | 45.63 | 44.75 |
| 56 | Zane Waddell | 1:30.43 | 46.33 | 44.10 |
| 57 | Tanner Filion | 1:30.46 | 45.47 | 44.99 |
| 58 | Dalton Lowe | 1:30.51 | 45.26 | 45.25 |
| 59 | Hill Taylor | 1:30.57 | 45.40 | 45.17 |
| 60 | Rian Graham | 1:30.60 | 44.93 | 45.67 |
| 61 | Mitchell Whyte | 1:30.61 | 45.97 | 44.64 |
| 62 | Andreas Vazaios | 1:30.62 | 45.81 | 44.81 |
| 63 | Caeleb Dressel | 1:30.63 | 42.80 | 47.83 |
| 64 | Miguel Ortiz | 1:30.65 | 45.17 | 45.48 |
| 65 | Aidan Stoffle | 1:30.66 | 45.68 | 44.98 |
| 66 | Ralf Tribuntsov | 1:30.68 | 45.92 | 44.76 |
| 67 | Ian Crocker | 1:30.69 | 44.72 | 45.97 |
| 68 | Connor Oslin | 1:30.72 | 46.16 | 44.56 |
| 69 | Nate Stoffle | 1:30.74 | 45.85 | 44.89 |
| 70 | Duncan Henderson | 1:30.75 | 45.96 | 44.79 |
| 71 | Sohib Khaled | 1:30.76 | 45.20 | 45.56 |
| 72 | Bjoern Kammann | 1:30.77 | 45.12 | 45.65 |
| 73 | Taylor Dale | 1:30.78 | 46.14 | 44.64 |
| 74 | Chris Staka | 1:30.80 | 45.78 | 45.02 |
| 75 | Wyatt Davis | 1:30.80 | 45.60 | 45.20 |
| 76 | Noah Hensley | 1:30.81 | 45.33 | 45.48 |
| 77 | Neil Walker | 1:30.81 | 45.89 | 44.92 |
| 78 | Jack Dolan | 1:30.86 | 46.24 | 44.62 |
| 79 | Jacob Molacek | 1:30.89 | 45.59 | 45.30 |
| 80 | Michael Phelps | 1:30.90 | 45.40 | 45.50 |
| 81 | Alex Quach | 1:30.91 | 44.74 | 46.17 |
| 82 | Bryce Bohman | 1:30.93 | 45.64 | 45.29 |
| 83 | Giovanni Izzo | 1:30.95 | 45.92 | 45.03 |
| 84 | Casper Puggaard | 1:31.01 | 45.26 | 45.75 |
| 85 | Austin Staab | 1:31.01 | 44.18 | 46.83 |
| 86 | Joe Schooling | 1:31.03 | 43.75 | 47.28 |
| 87 | Dylan Carter | 1:31.04 | 45.27 | 45.77 |
| 88 | Ben Hesen | 1:31.10 | 46.38 | 44.72 |
| 89 | Nathan Welker | 1:31.10 | 45.74 | 45.36 |
| 90 | Johnny Crush | 1:31.10 | 47.00 | 43.84 |
| 91 | Junya Koga | 1:31.11 | 46.25 | 44.86 |
| 92 | Maurice Grabowski | 1:31.12 | 45.34 | 45.78 |
| 93 | Daniel Hein | 1:31.12 | 45.86 | 45.26 |
| 94 | Alex Hotta | 1:31.19 | 45.81 | 45.38 |
| 95 | Joe Hayburn | 1:31.22 | 46.53 | 44.69 |
| 96 | Tomer Frankel | 1:31.22 | 43.85 | 47.37 |
| 97 | Bradley Dunham | 1:31.25 | 46.34 | 44.91 |
| 98 | Bjorn Seeliger | 1:31.28 | 47.11 | 44.17 |
| 99 | Ryan Held | 1:31.28 | 44.79 | 46.49 |
| 100 | Zheng Quah | 1:31.28 | 45.06 | 46.22 |
Austin staab
Kept scrolling for MP…80th 💀
How about a meters comparison
Far and away, Thomas Ceccon
51.6 back
50.42 fly
For a total of 1:42.02
I think Kos is then number 2, 1:42.75. I’m guessing he has a pretty good shot to go under 1:42 this summer, dropping 0.38 average per 100 seems quite doable at this point.
Regan is a full 1.65 seconds faster than Walsh at second on the women’s side, but Walsh is also only 0.09 faster than Curzan. Obv neither are touching Regan but Curzan prob has a nice shot to surpass Gretchen
Yes, 52.20 and 50.55 from last year. He is definitely faster now.
For a few months till Kos goes 49-51
Feel like Dressel could’ve gone faster than 47 in the 100 back
The crazy thing with this is Brendan Burns 100 fly time is as “slow” as it is
1:25.15 is an absurd add-up time. He has been awesome this week.
Also, your article says Kos is “half a second ahead of the #4 swimmer ever, Virginia Tech’s Youseff Ramadan”. The #4 time is now held by Ilya Kharun after the 42.92 he did yesterday. Also, I didn’t know he even had a 100 Back time.
daddy.
Maybe if it was the 200 back Leon would be a bit closer but I’d think even at this Hubert has the edge in the 100 back over him as good as Leon is still get bodied in that race and he’d still go something crazy like a 43.0 42.9 maybe and still look pedestrian.