1
Isaac
Litwiller
48.85
17
AAAA Min
Quicksilver Swimming
12/10/2025
2025 West Speedo Winter Juniors
2
Nathan
Foucu
50.08
17
AAA Min
AAAA: 48.89 (+1.19s | 2.4%)
Quicksilver Swimming
11/07/2025
Pleasanton Seahawks SC Senior 2
50 Back
24.63
24.63
100 Back
25.45
50.08
100 Back
50.08
3
Eduardo
Lasso
51.04
17
AAA Min
AAAA: 48.89 (+2.15s | 4.2%)
Quicksilver Swimming
12/04/2025
2025 Holiday Swim Festival
50 Back
23.92
23.92
100 Back
27.12
51.04
100 Back
51.04
4
Clark
Apuada
52.08
16
AA Min
AAA: 51.29 (+0.79s | 1.5%)
Quicksilver Swimming
11/01/2024
Pleasanton Seahawks SC Senior Open
50 Back
25.40
25.40
100 Back
26.68
52.08
100 Back
52.08
5
Brandon
Pon
52.88
16
AA Min
AAA: 51.29 (+1.59s | 3.0%)
Quicksilver Swimming
12/19/2025
ALTO Candy Cane Classic
50 Back
25.85
25.85
100 Back
27.03
52.88
100 Back
52.88
6
Jaden
Kim
53.24
17
AA Min
AAA: 51.29 (+1.95s | 3.7%)
Quicksilver Swimming
12/04/2025
2025 Holiday Swim Festival
50 Back
25.90
25.90
100 Back
27.34
53.24
100 Back
53.24
7
Sean
Chen
55.46
16
A Min
AA: 53.59 (+1.87s | 3.4%)
Quicksilver Swimming
01/26/2024
2024 Brian Malick Memorial Z1S Championships
8
Oliver
Santana
55.63
16
A Min
AA: 53.59 (+2.04s | 3.7%)
Quicksilver Swimming
09/23/2023
SR Open SC September 2023
50 Back
26.64
26.64
100 Back
28.99
55.63
100 Back
55.63
9
Thomas
Do
55.88
17
A Min
AA: 53.59 (+2.29s | 4.1%)
Quicksilver Swimming
11/01/2024
Pleasanton Seahawks SC Senior Open
50 Back
25.95
25.95
100 Back
29.93
55.88
100 Back
55.88
10
Mateo
Rosales
56.23
16
BB Min
A: 55.89 (+0.34s | 0.6%)
Quicksilver Swimming
11/01/2024
Pleasanton Seahawks SC Senior Open
50 Back
27.08
27.08
100 Back
29.15
56.23
100 Back
56.23
11
Bryce
Ng
57.02
17
BB Min
A: 55.89 (+1.13s | 2.0%)
Quicksilver Swimming
12/04/2025
2025 Holiday Swim Festival
50 Back
27.00
27.00
100 Back
30.02
57.02
100 Back
57.02
12
Elijah
Souza
57.07
16
BB Min
A: 55.89 (+1.18s | 2.1%)
Quicksilver Swimming
11/03/2023
Pleasanton Seahawks SC Senior Open
50 Back
27.53
27.53
100 Back
29.54
57.07
100 Back
57.07
13
Gavin
Wells
57.46
16
BB Min
A: 55.89 (+1.57s | 2.7%)
Alto Swim Club
01/27/2024
2024 Zone 1 North Championships
50 Back
28.18
28.18
100 Back
29.28
57.46
100 Back
57.46
14
Moore
Li
57.91
15
BB Min
A: 55.89 (+2.02s | 3.5%)
Quicksilver Swimming
10/19/2024
Orinda Aquatics SCY Senior Open Meet
50 Back
28.16
28.16
100 Back
29.75
57.91
100 Back
57.91
15
Tyler
Porter
58.68
15
BB Min
A: 55.89 (+2.79s | 4.8%)
Quicksilver Swimming
02/17/2024
2024 MAC Senior Open Trials Finals
50 Back
28.52
28.52
100 Back
30.16
58.68
100 Back
58.68
16
Aaron
Lam
59.19
14
BB Min
A: 55.89 (+3.30s | 5.6%)
Quicksilver Swimming
11/04/2022
Terrapins SC Senior II Prelims Finals
50 Back
29.07
29.07
100 Back
30.12
59.19
100 Back
59.19
17
Sergio
Montoya
59.20
14
BB Min
A: 55.89 (+3.31s | 5.6%)
Quicksilver Swimming
03/10/2023
2023 Spring Age Group Championships SCSC
50 Back
28.66
28.66
100 Back
30.54
59.20
100 Back
59.20
18
Miguel
Rances
59.35
16
BB Min
A: 55.89 (+3.46s | 5.8%)
Swim South Bay
01/26/2024
2024 Brian Malick Memorial Z1S Championships
19
Lucas
Tompkins
59.53
17
BB Min
A: 55.89 (+3.64s | 6.1%)
Unattached
11/01/2024
Pleasanton Seahawks SC Senior Open
50 Back
29.07
29.07
100 Back
30.46
59.53
100 Back
59.53
20
Hanbo
Song
1:00.10
14
BB Min
A: 55.89 (+4.21s | 7.0%)
Quicksilver Swimming
03/30/2023
2023 Far Westerns SC Championships
50 Back
29.09
29.09
100 Back
31.01
1:00.10
100 Back
1:00.10
21
Mukul
Kanda
1:00.45
16
BB Min
A: 55.89 (+4.56s | 7.5%)
Quicksilver Swimming
12/14/2024
Zone 1 South Winter Championships
22
Evan
Tran
1:00.85
16
B Min
BB: 1:00.59 (+0.26s | 0.4%)
Quicksilver Swimming
12/04/2025
2025 Holiday Swim Festival
50 Back
28.53
28.53
100 Back
32.32
1:00.85
100 Back
1:00.85
23
Keith
Magallanes
1:01.19
15
B Min
BB: 1:00.59 (+0.60s | 1.0%)
Quicksilver Swimming
10/22/2022
Orinda Aquatics PC Senior SC
50 Back
29.48
29.48
100 Back
31.71
1:01.19
100 Back
1:01.19
24
Alan
GU
1:01.27
15
B Min
BB: 1:00.59 (+0.68s | 1.1%)
Quicksilver Swimming
09/24/2022
TCA Short Course Senior Open Meet
50 Back
30.08
30.08
100 Back
31.19
1:01.27
100 Back
1:01.27
25
Ethan
Tayco
1:01.45
17
B Min
BB: 1:00.59 (+0.86s | 1.4%)
Quicksilver Swimming
01/24/2025
2025 Brian Malick Memorial Z1S Championships
26
Uladzislau
Khmel
1:02.03
16
B Min
BB: 1:00.59 (+1.44s | 2.3%)
Quicksilver Swimming
09/23/2023
SR Open SC September 2023
50 Back
30.13
30.13
100 Back
31.89
1:02.02
100 Back
1:02.02
27
Lucas
Tompkins
1:02.05
16
B Min
BB: 1:00.59 (+1.46s | 2.4%)
South Valley Makos
02/22/2024
2024 Juanita Allington Memorial
50 Back
30.10
30.10
100 Back
31.95
1:02.05
100 Back
1:02.05
28
Kevin
Noller
1:03.78
17
B Min
BB: 1:00.59 (+3.19s | 5.0%)
Quicksilver Swimming
01/24/2025
2025 Brian Malick Memorial Z1S Championships
29
Warren
Tan
1:03.99
16
B Min
BB: 1:00.59 (+3.40s | 5.3%)
Quicksilver Swimming
12/14/2024
Zone 1 South Winter Championships
30
Bryce
Chen
1:04.09
13
B Min
BB: 1:00.59 (+3.50s | 5.5%)
Quicksilver Swimming
09/23/2022
SCSC $ Bay CBA+
31
Jason
Quesada
1:04.55
16
B Min
BB: 1:00.59 (+3.96s | 6.1%)
Quicksilver Swimming
12/14/2024
Zone 1 South Winter Championships
32
Lucas
Sepe
1:04.81
16
B Min
BB: 1:00.59 (+4.22s | 6.5%)
Quicksilver Swimming
12/08/2023
Zone 1 South AGC Minus Year End
33
Jack
Cameron
1:05.35
14
B: 1:05.19 (+0.16s | 0.2%)
Quicksilver Swimming
10/22/2022
Orinda Aquatics PC Senior SC
50 Back
31.56
31.56
100 Back
33.79
1:05.35
100 Back
1:05.35
34
Ryan
Sacco
1:05.72
14
B: 1:05.19 (+0.53s | 0.8%)
Quicksilver Swimming
02/19/2022
SBA C B A
35
Joey
Rypstra
1:05.81
16
B: 1:05.19 (+0.62s | 0.9%)
Quicksilver Swimming
01/24/2025
2025 Brian Malick Memorial Z1S Championships
36
Kevin
Noller
1:06.08
15
B: 1:05.19 (+0.89s | 1.3%)
Unattached
03/04/2023
Pleasanton Seahawks SC Senior Open
50 Back
32.60
32.60
100 Back
33.48
1:06.08
100 Back
1:06.08
37
Nolan
Watts
1:06.54
14
B: 1:05.19 (+1.35s | 2.0%)
Quicksilver Swimming
01/27/2023
2023 Brian Malick Memorial Z1S Championships
38
Derek
Laudon
1:07.86
14
B: 1:05.19 (+2.67s | 3.9%)
Pacific Swimming Zone
02/27/2022
2022 Pacific Swimming Zone Challenge
39
Harry
Yin
1:07.87
13
B: 1:05.19 (+2.68s | 3.9%)
Santa Clara Swim Club
11/20/2021
Pacific Swimming Senior Open Meet
50 Back
33.62
33.62
100 Back
34.25
1:07.87
100 Back
1:07.87
40
James
Kim
1:09.43
15
B: 1:05.19 (+4.24s | 6.1%)
Unattached
04/29/2022
BVAL - Mt. Hamilton Championships
41
James
Tong
1:09.65
13
B: 1:05.19 (+4.46s | 6.4%)
Quicksilver Swimming
10/28/2022
2022 QSS TIDE Spooktacular
50 Back
34.23
34.23
100 Back
35.42
1:09.65
100 Back
1:09.65
42
Hayden
Jane
1:10.06
14
B: 1:05.19 (+4.87s | 7.0%)
Quicksilver Swimming
10/28/2022
2022 QSS TIDE Spooktacular
50 Back
33.95
33.95
100 Back
36.11
1:10.06
100 Back
1:10.06
43
Leonardo
Yousefpor
1:10.55
14
B: 1:05.19 (+5.36s | 7.6%)
Quicksilver Swimming
12/09/2022
Zone 1 South Winter Age Group (minus)
44
Nathan
Moffat
1:10.55
15
B: 1:05.19 (+5.36s | 7.6%)
Los Gatos
04/24/2024
2024 SCVAL De Anza Division Championship Meet
50 Back
33.70
33.70
100 Back
36.85
1:10.55
100 Back
1:10.55
45
Aaron
Chien
1:11.73
14
B: 1:05.19 (+6.54s | 9.1%)
Quicksilver Swimming
12/09/2022
Zone 1 South Winter Age Group (minus)
46
Michael
Zhu
1:13.50
14
B: 1:05.19 (+8.31s | 11.3%)
Quicksilver Swimming
02/28/2021
QSS Intrasqaud Age Group Meet
50 Back
36.13
36.13
100 Back
37.37
1:13.50
100 Back
1:13.50
47
Kevin
JI
1:14.12
14
B: 1:05.19 (+8.93s | 12.0%)
Quicksilver Swimming
03/18/2023
Quicksilver Swimming Santa Cruz C B A+
48
Jason
Lee
1:14.40
14
B: 1:05.19 (+9.21s | 12.4%)
Quicksilver Swimming
10/22/2021
2021Quicksilver October Spooktacular
50 Back
36.13
36.13
100 Back
38.27
1:14.40
100 Back
1:14.40
49
Zachary
Rodrigues
1:14.52
14
B: 1:05.19 (+9.33s | 12.5%)
Quicksilver Swimming
01/28/2022
2022 Z1S Brian Malick Memorial Meet
50
Sean
Gwin
1:14.60
15
B: 1:05.19 (+9.41s | 12.6%)
Quicksilver Swimming
12/09/2022
Zone 1 South Winter Age Group (minus)