TYR Summer Championships, Day Two Prelims: Alex Shackell Grabs Top Seed in 100 Butterfly
The first night of the TYR Summer Championships offered some impressive speed, as Australia Jamie Jack paced the way in the men’s 50-meter freestyle, going 21.63, while American Kieran Smith bested the field in the 200 individual medley with a swim of 1:57.26. On the women’s side, Tokyo Olympian Rhyan White was the titlist in the 200 backstroke and Louisville recruit Julie Mishler went 24.90 to win the 50 freestyle.
Smith will be back in the pool on Wednesday morning for the Day Two prelims at the William Woollett Aquatic Center. Smith is slated to race the 400 freestyle, an event in which he is an Olympic bronze medalist. That 400 freestyle will also include Paris Olympian Aaron Shackell, making for an enticing final during the night session. In the 100 butterfly, Alex Shackell will headline her field.
Here’s an event-by-event recap of the Day Two prelims:
Women’s 400 Freestyle
Bound for the University of Virginia, Madi Mintenko nailed down the top seed for the final of the 400 freestyle with a morning swim of 4:09.34. That effort was more than two seconds faster than Justina Kozan, who was the winner of the 200 individual medley on Night One. At night, Mintenko will chase her personal best, which sits at 4:07.53.
A quartet of swimmers moved into the final behind 4:12 performances, including Australia’s Molly Walker (4:12.04) and Chloe Stepanek (4:12.53). Bella Sims (4:12.61) and Gena Jorgenson (4:12.89) followed in fifth and sixth. Sims just returned from the World Championships in Singapore, where she raced a leg on the United States’ 800 freestyle relay during prelims.
Event 11 Women 400 LC Meter Freestyle
==================================================================
World: W 3:54.15 6/7/2025 Summer McIntosh, CAN
American: A 3:56.46 8/7/2016 Katie Ledecky, USA
U.S. Open: O 3:56.81 5/1/2025 Katie Ledecky, Gator Swim Club-
Jr World: J 3:56.08 3/28/2023 Summer McIntosh, CAN
Pro Swim: P 3:56.81 5/1/2025 Katie Ledecky, Gator Swim Club-
Name Age Team Seed Prelims
==================================================================
=== Preliminaries ===
1 Madi Mintenko 17 Pikes Peak Athle 4:07.53 4:09.34 q
r:+0.78 28.75 1:00.00 (31.25)
1:31.76 (31.76) 2:03.94 (32.18)
2:34.84 (30.90) 3:06.01 (31.17)
3:37.84 (31.83) 4:09.34 (31.50)
2 Justina Kozan 21 Brea Aquatics-CA 4:38.00Y 4:11.43 q
r:+0.62 28.84 59.82 (30.98)
1:31.68 (31.86) 2:03.49 (31.81)
2:35.67 (32.18) 3:07.87 (32.20)
3:40.05 (32.18) 4:11.43 (31.38)
3 Molly Walker 20 Australia-IT 4:10.87 4:12.04 q
r:+0.71 28.65 59.57 (30.92)
1:31.36 (31.79) 2:03.74 (32.38)
2:35.78 (32.04) 3:08.28 (32.50)
3:40.43 (32.15) 4:12.04 (31.61)
4 Chloe Stepanek 23 Unattached-MR 4:17.30 4:12.53 q
r:+0.64 29.05 1:00.33 (31.28)
1:32.35 (32.02) 2:04.37 (32.02)
2:36.51 (32.14) 3:08.50 (31.99)
3:40.89 (32.39) 4:12.53 (31.64)
5 Bella Sims 20 Sandpipers Of Ne 4:07.11 4:12.61 q
28.07 58.97 (30.90)
1:31.04 (32.07) 2:03.46 (32.42)
2:35.58 (32.12) 3:07.86 (32.28)
3:40.33 (32.47) 4:12.61 (32.28)
6 Gena Jorgenson 21 Club Husker-MW/N 4:11.96 4:12.89 q
r:+0.74 29.19 1:00.68 (31.49)
1:32.48 (31.80) 2:04.82 (32.34)
2:36.90 (32.08) 3:09.24 (32.34)
3:41.41 (32.17) 4:12.89 (31.48)
7 Michaela Mattes 20 Gator Swim Club- 4:09.66 4:14.12 q
r:+0.76 29.52 1:01.30 (31.78)
1:33.18 (31.88) 2:05.40 (32.22)
2:37.28 (31.88) 3:09.38 (32.10)
3:42.35 (32.97) 4:14.12 (31.77)
8 Summer Cardwell 20 Univ Louisville- 4:14.00 4:14.21 q
r:+0.73 29.17 1:00.29 (31.12)
1:32.45 (32.16) 2:04.55 (32.10)
2:37.37 (32.82) 3:10.01 (32.64)
3:43.01 (33.00) 4:14.21 (31.20)
Men’s 400 Freestyle
United States Olympians Aaron Shackell and Kieran Smith will duel in the final of the 400 freestyle after finishing second and third in the event during prelims. Aussie Matthew Galea secured the top seed for evening when he posted a time of 3:50.58. Shackell was right behind Galea in 3:50.65 while Smith went 3:51.26 en route to winning the second of three heats.
Shackell and Smith are targeting a swim faster than 3:45.71 in the final. That time is what teenage star Luka Mijatovic posted at Nationals and is currently good for a berth to the Pan Pacific Championships next summer. However, if Shackell or Smith can get under that time, they would bump ahead of Mijatovic for the Pan Pacs bid.
Event 12 Men 400 LC Meter Freestyle
==================================================================
World: W 3:39.96 4/12/2025 Lucas Martens, GER
American: A 3:42.78 8/10/2008 Larsen Jensen, USA
U.S. Open: O 3:43.33 6/6/2025 Rex Maurer, Longhorn Aquatic
Jr World: J 3:44.31 7/9/2023 Petar Petrov Mitsin, BUL
Pro Swim: P 3:43.55 2016 Sun Yang
Name Age Team Seed Prelims
==================================================================
=== Preliminaries ===
1 Matthew Galea 23 Australia-IT 3:48.12 3:50.58 q
r:+0.67 26.97 56.39 (29.42)
1:26.11 (29.72) 1:55.85 (29.74)
2:24.68 (28.83) 2:53.58 (28.90)
3:22.50 (28.92) 3:50.58 (28.08)
2 Aaron Shackell 20 Carmel Swim Club 3:45.45 3:50.65 q
r:+0.65 26.18 55.05 (28.87)
1:24.60 (29.55) 1:54.29 (29.69)
2:23.03 (28.74) 2:52.65 (29.62)
3:22.06 (29.41) 3:50.65 (28.59)
3 Kieran Smith 25 Ridgefield Aquat 3:45.76 3:51.26 q
r:+0.69 26.81 56.30 (29.49)
1:25.80 (29.50) 1:54.97 (29.17)
2:24.34 (29.37) 2:53.27 (28.93)
3:22.51 (29.24) 3:51.26 (28.75)
4 Alec Enyeart 21 Tsunami Swim Tea 3:48.46 3:52.44 q
r:+0.68 26.79 55.67 (28.88)
1:24.91 (29.24) 1:54.70 (29.79)
2:24.77 (30.07) 2:54.21 (29.44)
3:23.84 (29.63) 3:52.44 (28.60)
5 Colin Jacobs 16 Unattached-FL 3:53.66 3:53.59 q
r:+0.69 26.84 55.93 (29.09)
1:25.87 (29.94) 1:55.83 (29.96)
2:25.42 (29.59) 2:55.26 (29.84)
3:24.84 (29.58) 3:53.59 (28.75)
6 Gabriel Manteuf 17 Sandpipers Of Ne 3:54.17 3:53.61 q
r:+0.74 26.73 55.89 (29.16)
1:24.64 (28.75) 1:54.08 (29.44)
2:23.53 (29.45) 2:53.57 (30.04)
3:23.68 (30.11) 3:53.61 (29.93)
7 Mason Edmund 21 Ohio State Unive 3:52.51 3:54.93 q
r:+0.74 27.36 56.98 (29.62)
1:26.58 (29.60) 1:56.59 (30.01)
2:26.48 (29.89) 2:56.54 (30.06)
3:26.22 (29.68) 3:54.93 (28.71)
8 Juan Vallmitjan 16 South Florida Aq 3:55.66 3:55.37 q
r:+0.71 27.49 56.91 (29.42)
1:26.65 (29.74) 1:56.80 (30.15)
2:27.21 (30.41) 2:57.80 (30.59)
3:26.61 (28.81) 3:55.37 (28.76)
Women’s 100 Butterfly
Olympian and Team USA veteran Alex Shackell had no trouble claiming the top seed for the final of the 100 butterfly, as she registered a time of 57.69. Shackell’s time was more than a second faster than the 58.75 of Australian Bella Grant, who will be the second seed. Shackell missed out on a spot on the U.S. squad that just competed at the World Championships, but she’s looking to end the summer on a positive note.
Bailey Hartman was the third-fastest swimmer in prelims, going 59.31.
Event 13 Women 100 LC Meter Butterfly
==================================================================
World: W 54.60 5/3/2025 Gretchen Walsh, USA
American: A 54.60 5/3/2025 Gretchen Walsh, New York Athleti
U.S. Open: O 54.60 5/3/2025 Gretchen Walsh, New York Athleti
Jr World: J 56.33 6/22/2024 Mizuki Hirai, JPN
Pro Swim: P 54.60 5/3/2025 Gretchen Walsh, New York Athleti
Name Age Team Seed Prelims
==================================================================
=== Preliminaries ===
1 Alex Shackell 18 Carmel Swim Club 56.78 57.69 q
r:+0.59 26.66 57.69 (31.03)
2 Bella Grant 20 Australia-IT 58.26 58.75 q
r:+0.66 27.46 58.75 (31.29)
3 Bailey Hartman 19 Cavalier Aquatic 58.83 59.31 q
r:+0.67 27.65 59.31 (31.66)
4 Sydney Gring 20 Univ Pittsburgh- 1:00.08 59.58 q
r:+0.62 28.20 59.58 (31.38)
5 Rachel Klinker 24 California Aquat 59.06 59.66 q
r:+0.67 28.35 59.66 (31.31)
5 Isabella Boyd 20 Australia-IT 58.44 59.66 q
r:+0.67 28.88 59.66 (30.78)
7 Erika Pelaez 19 Eagle Aquatics-F 59.32 59.83 q
r:+0.64 28.29 59.83 (31.54)
8 Miriam Sheehan 20 Sun Devil Swimmi 59.83 1:00.21 q
r:+0.66 28.26 1:00.21 (31.95)
Men’s 100 Butterfly
Racing in the last of three heats, Trenton Julian recorded the quickest time of the morning in the 100 butterfly. Julian touched the wall in 51.18, as he was out in 24.25 and back in 26.93. Julian was one of three athletes to break the 52-second barrier during prelims, joined by Australia’s Ben Armbruster (51.73) and Aiden Hayes (51.83).
Top-seeded Caeleb Dressel, who was third in the 50 freestyle on the opening night of competition, was a declared false start in the 100 fly. Dressel is also entered in the 50 butterfly, which is scheduled for Thursday.
Event 14 Men 100 LC Meter Butterfly
==================================================================
World: W 49.45 7/31/2021 Caeleb Dressel, USA
American: A 49.45 7/30/2021 Caeleb Dressel, USA
U.S. Open: O 49.76 6/18/2021 Caeleb Dressel, Gator Swim Club-
Jr World: J 50.62 7/29/2017 Kristof Milak, HUN
Pro Swim: P 50.42 5/3/2025 Ilya Kharun, Unattached-AZ
Name Age Team Seed Prelims
==================================================================
=== Preliminaries ===
1 Trenton Julian 26 Mission Viejo Na 51.53 51.18 q
r:+0.62 24.25 51.18 (26.93)
2 Ben Armbruster 23 Australia-IT 51.17 51.73 q
r:+0.64 24.04 51.73 (27.69)
3 Aiden Hayes 22 Wolfpack Elite-N 51.43 51.83 q
r:+0.65 24.30 51.83 (27.53)
4 Julian Koch 19 Univ Pittsburgh- 52.28 52.16 q
r:+0.69 23.85 52.16 (28.31)
5 Evan Fentress 21 Ohio State Unive 52.27 52.35 q
r:+0.67 24.31 52.35 (28.04)
6 Jack Dahlgren 25 Unattached-MV 52.02 52.63 q
r:+0.68 24.73 52.63 (27.90)
7 August Vetsch 19 California Aquat 52.11 52.71 q
r:+0.69 24.23 52.71 (28.48)
8 Grant House 27 Sun Devil Swimmi 52.49 52.96 q
r:+0.66 24.73 52.96 (28.23)
Women’s 200 Breaststroke
Australia’s Sienna Harben, the second-place finisher from the 100 breaststroke on Night One, led the way through prelims in the 200 breaststroke. Harben was the only athlete under 2:30, clocking in at 2:28.15. That time was nearly four seconds faster than 47-year-old Gabby Rose, who earned the second seed in 2:32.03. She was followed by fellow American Isabelle Odgers (2:32.66).
Event 15 Women 200 LC Meter Breaststroke
==================================================================
World: W 2:17.55 4/21/2023 Evgeniia Chikunova, RUS
American: A 2:18.50 8/1/2025 Kate Douglass, USA
U.S. Open: O 2:19.30 1/13/2024 Kate Douglass, New York Athleti
Jr World: J 2:19.64 8/30/2015 Viktoria Gunes, TUR
Pro Swim: P 2:19.30 1/13/2024 Kate Douglass, New York Athleti
Name Age Team Seed Prelims
==================================================================
=== Preliminaries ===
1 Sienna Harben 21 Australia-IT 2:26.94 2:28.15 q
r:+0.68 33.29 1:11.05 (37.76)
1:49.16 (38.11) 2:28.15 (38.99)
2 Gabrielle Rose 47 Alpha Aquatics-C 2:30.13 2:32.03 q
r:+0.70 34.21 1:12.45 (38.24)
1:52.01 (39.56) 2:32.03 (40.02)
3 Isabelle Odgers 24 Irvine Novaquati 2:28.58 2:32.66 q
r:+0.72 34.68 1:13.31 (38.63)
1:52.52 (39.21) 2:32.66 (40.14)
4 Mackenzie Lung 21 Fresno State Swi 2:31.30 2:33.01 q
r:+0.68 33.83 1:13.48 (39.65)
1:53.37 (39.89) 2:33.01 (39.64)
5 Mia Cheatwood 21 Univ Louisville- 2:32.72 2:33.55 q
r:+0.70 33.67 1:11.08 (37.41)
1:51.26 (40.18) 2:33.55 (42.29)
6 Jonette Laegrei 20 Indiana Swim Clu 2:08.59Y 2:33.76 q
35.47 1:14.37 (38.90)
1:53.78 (39.41) 2:33.76 (39.98)
7 Ella Flowers 21 Trojan Swim Club 2:31.92 2:34.42 q
r:+0.68 34.91 1:13.25 (38.34)
1:53.47 (40.22) 2:34.42 (40.95)
8 Sofia Szymanows 16 Irvine Novaquati 2:34.09 2:35.06 q
r:+0.74 34.71 1:14.49 (39.78)
1:54.57 (40.08) 2:35.06 (40.49)
