1
Chengyuan
Song
54.24
13
AAA Min
AAAA: 53.49 (+0.75s | 1.4%)
Alto Swim Club
04/03/2025
Pacific Swimming SC Far Western Champs
50 Back
26.20
26.20
100 Back
28.04
54.24
100 Back
54.24
2
Yangyue
Zhu
55.39
14
AAA Min
AAAA: 53.49 (+1.90s | 3.4%)
Alto Swim Club
11/07/2025
Pleasanton Seahawks SC Senior 2
50 Back
27.25
27.25
100 Back
28.14
55.39
100 Back
55.39
3
Karl
Kaldenhoff
56.63
14
AA Min
AAA: 55.99 (+0.64s | 1.1%)
Alto Swim Club
01/25/2025
Z1N SC Championship
50 Back
27.25
27.25
100 Back
29.38
56.63
100 Back
56.63
4
Yixuan
Zhang
57.39
14
AA Min
AAA: 55.99 (+1.40s | 2.4%)
Alto Swim Club
11/22/2025
Pacific Swim SC Senior Open Hosted By TERA
50 Back
27.98
27.98
100 Back
29.41
57.39
100 Back
57.39
5
Dylan
Zhao
57.59
13
AA Min
AAA: 55.99 (+1.60s | 2.8%)
Santa Clara Swim Club
03/01/2025
Santa Clara Swim Club Race To AG Champs
50 Back
28.52
28.52
100 Back
29.07
57.59
100 Back
57.59
6
Phillip
Bulankov
1:00.26
13
A Min
AA: 58.59 (+1.67s | 2.8%)
Alto Swim Club
12/12/2025
Winter SC Age Group Championships
50 Back
29.05
29.05
100 Back
31.21
1:00.26
100 Back
1:00.26
7
Daniel
Deng
1:00.62
13
A Min
AA: 58.59 (+2.03s | 3.3%)
Alto Swim Club
02/01/2025
Alto Swim Club Valentine Classic
50 Back
29.61
29.61
100 Back
31.01
1:00.62
100 Back
1:00.62
8
Ethan
Chen
1:02.08
14
BB Min
A: 1:01.09 (+0.99s | 1.6%)
Alto Swim Club
11/15/2025
Alto Nov 15 16 Fall Frolic
50 Back
30.11
30.11
100 Back
31.97
1:02.08
100 Back
1:02.08
9
Logan
Browne
1:02.44
13
BB Min
A: 1:01.09 (+1.35s | 2.2%)
Alto Swim Club
11/15/2025
Alto Nov 15 16 Fall Frolic
50 Back
30.05
30.05
100 Back
32.39
1:02.44
100 Back
1:02.44
10
Aiden
Yeh
1:03.73
13
BB Min
A: 1:01.09 (+2.64s | 4.1%)
Alto Swim Club
12/12/2025
Winter SC Age Group Championships
50 Back
30.52
30.52
100 Back
33.21
1:03.73
100 Back
1:03.73
11
Eric
Chang
1:05.91
14
BB Min
A: 1:01.09 (+4.82s | 7.3%)
Alto Swim Club
11/15/2025
Alto Nov 15 16 Fall Frolic
50 Back
31.85
31.85
100 Back
34.06
1:05.91
100 Back
1:05.91
12
Yu-Sen
Lo
1:06.15
14
BB Min
A: 1:01.09 (+5.06s | 7.6%)
Alto Swim Club
02/01/2025
Alto Swim Club Valentine Classic
50 Back
31.23
31.23
100 Back
34.92
1:06.15
100 Back
1:06.15
13
Felix
Yu
1:06.81
13
B Min
BB: 1:06.19 (+0.62s | 0.9%)
Alto Swim Club
03/29/2025
Alto Rock The Blocks Invitational
50 Back
32.43
32.43
100 Back
34.37
1:06.81
100 Back
1:06.81
14
Bryan
Mai
1:07.05
13
B Min
BB: 1:06.19 (+0.86s | 1.3%)
Alto Swim Club
12/05/2025
2025 Tualatin Hills Holiday Classic
50 Back
31.38
31.38
100 Back
35.67
1:07.05
100 Back
1:07.05
15
Ian
Sun
1:07.21
12
B Min
BB: 1:06.19 (+1.02s | 1.5%)
Alto Swim Club
03/29/2025
Alto Rock The Blocks Invitational
50 Back
32.88
32.88
100 Back
34.33
1:07.21
100 Back
1:07.21
16
Skye
Bailey
1:07.74
12
B Min
BB: 1:06.19 (+1.55s | 2.3%)
Alto Swim Club
02/01/2025
Alto Swim Club Valentine Classic
50 Back
32.81
32.81
100 Back
34.93
1:07.74
100 Back
1:07.74
17
Elias
Kuusela
1:07.78
13
B Min
BB: 1:06.19 (+1.59s | 2.3%)
Alto Swim Club
02/01/2025
Alto Swim Club Valentine Classic
50 Back
33.31
33.31
100 Back
34.47
1:07.78
100 Back
1:07.78
18
Paxton
Sung
1:07.80
13
B Min
BB: 1:06.19 (+1.61s | 2.4%)
Alto Swim Club
12/05/2025
2025 Tualatin Hills Holiday Classic
50 Back
32.63
32.63
100 Back
35.17
1:07.80
100 Back
1:07.80
19
Andrew
Xu
1:08.45
13
B Min
BB: 1:06.19 (+2.26s | 3.3%)
Alto Swim Club
02/14/2025
33rd Annual Lost Dutchman Invitational
50 Back
33.68
33.68
100 Back
34.77
1:08.45
100 Back
1:08.45
20
Vincent
Liu
1:08.85
13
B Min
BB: 1:06.19 (+2.66s | 3.9%)
Alto Swim Club
11/15/2025
Alto Nov 15 16 Fall Frolic
50 Back
32.40
32.40
100 Back
36.44
1:08.85
100 Back
1:08.85
21
Bryan
Wang
1:09.43
13
B Min
BB: 1:06.19 (+3.24s | 4.7%)
Alto Swim Club
10/26/2024
2024 SUNN Fall Classic CBA+ Meet
22
William
Nabbe
1:10.10
13
B Min
BB: 1:06.19 (+3.91s | 5.6%)
Alto Swim Club
11/15/2025
Alto Nov 15 16 Fall Frolic
50 Back
33.47
33.47
100 Back
36.63
1:10.10
100 Back
1:10.10
23
Ivan
Dub
1:10.50
14
B Min
BB: 1:06.19 (+4.31s | 6.1%)
Alto Swim Club
10/11/2025
2025 DACA SC CBA Meet
24
Ryan
Sung
1:11.25
11
B Min
BB: 1:06.19 (+5.06s | 7.1%)
Alto Swim Club
10/26/2024
2024 SUNN Fall Classic CBA+ Meet
25
Nick
Momeni
1:11.35
14
B: 1:11.29 (+0.06s | 0.1%)
Alto Swim Club
11/15/2025
Alto Nov 15 16 Fall Frolic
50 Back
35.13
35.13
100 Back
36.22
1:11.35
100 Back
1:11.35
26
Theodore
Zhang
1:11.92
13
B: 1:11.29 (+0.63s | 0.9%)
Alto Swim Club
10/11/2025
2025 DACA SC CBA Meet
27
Lucas
Huang
1:13.46
12
B: 1:11.29 (+2.17s | 3.0%)
Alto Swim Club
11/09/2024
Alto Go The Distance
50 Back
35.70
35.70
100 Back
37.76
1:13.46
100 Back
1:13.46
28
Herbert
Kong
1:14.18
14
B: 1:11.29 (+2.89s | 3.9%)
Alto Swim Club
01/25/2025
Z1N SC Championship
50 Back
36.56
36.56
100 Back
37.62
1:14.18
100 Back
1:14.18
29
Roman
Elman
1:14.99
13
B: 1:11.29 (+3.70s | 4.9%)
Alto Swim Club
02/14/2025
33rd Annual Lost Dutchman Invitational
30
Ethan
Jiang
1:15.11
14
B: 1:11.29 (+3.82s | 5.1%)
Alto Swim Club
10/11/2025
2025 DACA SC CBA Meet
31
Xuan
Wang
1:15.43
14
B: 1:11.29 (+4.14s | 5.5%)
Alto Swim Club
03/29/2025
Alto Rock The Blocks Invitational
32
Howard
Sun
1:16.15
13
B: 1:11.29 (+4.86s | 6.4%)
Alto Swim Club
10/11/2025
2025 DACA SC CBA Meet
33
Alexander
Masson
1:16.17
12
B: 1:11.29 (+4.88s | 6.4%)
Alto Swim Club
03/29/2024
Alto Rock The Blocks Invitational
34
Daniel
Shin
1:17.33
13
B: 1:11.29 (+6.04s | 7.8%)
Alto Swim Club
11/15/2025
Alto Nov 15 16 Fall Frolic
50 Back
36.49
36.49
100 Back
40.84
1:17.33
100 Back
1:17.33
35
Leray
Williams
1:19.00
13
B: 1:11.29 (+7.71s | 9.8%)
Alto Swim Club
11/15/2025
Alto Nov 15 16 Fall Frolic
50 Back
39.05
39.05
100 Back
39.95
1:19.00
100 Back
1:19.00
36
Jesse
Tian
1:19.67
12
B: 1:11.29 (+8.38s | 10.5%)
Alto Swim Club
03/29/2024
Alto Rock The Blocks Invitational
50 Back
38.24
38.24
100 Back
41.43
1:19.67
100 Back
1:19.67
37
Yunxiang
Zhou
1:20.03
12
B: 1:11.29 (+8.74s | 10.9%)
Alto Swim Club
12/06/2025
Alto Dec 6 7 CBA
50 Back
38.00
38.00
100 Back
42.03
1:20.03
100 Back
1:20.03
38
Michael
Dashouk
1:20.05
12
B: 1:11.29 (+8.76s | 10.9%)
Alto Swim Club
11/09/2024
Alto Go The Distance
50 Back
39.79
39.79
100 Back
40.26
1:20.05
100 Back
1:20.05
39
Adrian
Yang
1:20.24
13
B: 1:11.29 (+8.95s | 11.2%)
Alto Swim Club
10/25/2025
2025 SUNN Fall Classic
40
Amruth
Settipalli
1:20.42
13
B: 1:11.29 (+9.13s | 11.4%)
Alto Swim Club
12/06/2025
Alto Dec 6 7 CBA
50 Back
39.57
39.57
100 Back
40.85
1:20.42
100 Back
1:20.42
41
Reznor
Tu
1:20.65
13
B: 1:11.29 (+9.36s | 11.6%)
Alto Swim Club
10/11/2025
2025 DACA SC CBA Meet
42
Aidan
Toda
1:20.92
13
B: 1:11.29 (+9.63s | 11.9%)
Alto Swim Club
12/06/2025
Alto Dec 6 7 CBA
50 Back
39.19
39.19
100 Back
41.73
1:20.92
100 Back
1:20.92
43
Masaki
Shikdar
1:21.66
13
B: 1:11.29 (+10.37s | 12.7%)
Alto Swim Club
10/25/2025
2025 SUNN Fall Classic
44
Elik
Shen
1:21.78
13
B: 1:11.29 (+10.49s | 12.8%)
Alto Swim Club
10/11/2025
2025 DACA SC CBA Meet
45
Vedant
Patel
1:21.98
13
B: 1:11.29 (+10.69s | 13.0%)
Alto Swim Club
10/26/2024
2024 SUNN Fall Classic CBA+ Meet
46
Mason
Chan
1:22.02
13
B: 1:11.29 (+10.73s | 13.1%)
Alto Swim Club
10/26/2024
2024 SUNN Fall Classic CBA+ Meet
47
Shravan
Vijay
1:22.61
13
B: 1:11.29 (+11.32s | 13.7%)
Alto Swim Club
12/06/2025
Alto Dec 6 7 CBA
50 Back
40.97
40.97
100 Back
41.64
1:22.61
100 Back
1:22.61
48
Lin
Du
1:22.63
13
B: 1:11.29 (+11.34s | 13.7%)
Alto Swim Club
12/06/2025
Alto Dec 6 7 CBA
50 Back
41.10
41.10
100 Back
41.53
1:22.63
100 Back
1:22.63
49
Nicolas
Hira
1:22.97
11
B: 1:11.29 (+11.68s | 14.1%)
Alto Swim Club
11/23/2024
Alto Fall Frolic Meet
50 Back
41.86
41.86
100 Back
41.11
1:22.97
100 Back
1:22.97
50
Jiewen
Chen
1:23.32
13
B: 1:11.29 (+12.03s | 14.4%)
Alto Swim Club
12/06/2025
Alto Dec 6 7 CBA
50 Back
40.80
40.80
100 Back
42.52
1:23.32
100 Back
1:23.32