Swimmer profile

Mackenzie O'Brien

Female11-12Tollefson SwimmingPV · EASTERN

Performance Progression Goals Time Standards Meets

AAA standard achieved — outstanding season!

11 all-time personal bests this season!

Top 6 in PV — 100 Breast SCY

Standards achieved

AAA×2AA×2A×3BB×2B×1

All-time PBs

11events

Best PV rank

#6100 Breast SCY

Events ranked

11SCY

Age group

11-12

★ Highlight Events

100 Breast SCY

Standard	Cut	Gap
B✓	1:36.49	−15.57
BB✓	1:29.29	−8.37
A✓	1:22.19	−1.27
AA	1:18.59	+2.33
AAA	1:15.09	+5.83
AAAA	1:11.49	+9.43

PBAAA

1:20.92

2026 FL ISCA East Coast Elite Showcase

Apr 1, 2026

LSC

of 193

50 Breast SCY

Standard	Cut	Gap
B✓	43.99	−6.77
BB✓	40.89	−3.67
A✓	37.69	−0.47
AA	36.19	+1.03
AAA	34.59	+2.63
AAAA	32.99	+4.23

PBAAA

37.22

2026 PV Cherry Blossom Champs Meet

Mar 1, 2026

LSC

of 205

200 Breast SCY

3:08.84

2025 PV October Open - Fairland

Oct 11, 2025

LSC

of 72

Event

50 Free SCY

Standard	Cut	Gap
B✓	33.99	−3.12
BB✓	31.69	−0.82
A	29.29	+1.58
AA	28.09	+2.78
AAA	26.99	+3.88
AAAA	25.79	+5.08

PBAA

30.87

2026 PV Cherry Blossom Champs Meet

Mar 1, 2026

LSC

of 211

100 Free SCY

Standard	Cut	Gap
B✓	1:14.69	−5.03
BB	1:09.39	+0.27
A	1:03.99	+5.67
AA	1:01.39	+8.27
AAA	58.69	+10.97
AAAA	55.99	+13.67

PBA

1:09.66

2026 FL ISCA East Coast Elite Showcase

Apr 3, 2026

LSC

of 206

200 Free SCY

Standard	Cut	Gap
B✓	2:42.59	−1.00
BB	2:30.89	+10.70
A	2:19.29	+22.30
AA	2:13.49	+28.10
AAA	2:07.69	+33.90
AAAA	2:01.89	+39.70

PBBB

2:41.59

2026 PV Cherry Blossom Champs Meet

Mar 1, 2026

LSC

106

of 189

50 Back SCY

Standard	Cut	Gap
B✓	38.79	−1.61
BB	35.99	+1.19
A	33.19	+3.99
AA	31.79	+5.39
AAA	30.49	+6.69
AAAA	29.09	+8.09

PBA

37.18

2026 FL ISCA East Coast Elite Showcase

Apr 1, 2026

LSC

of 205

100 Back SCY

Standard	Cut	Gap
B	1:26.59	+11.47
BB	1:19.79	+18.27
A	1:12.99	+25.07
AA	1:09.59	+28.47
AAA	1:06.19	+31.87
AAAA	1:02.69	+35.37

PBB

1:38.06

2024 PV November Open - PAC

Nov 17, 2024

LSC

177

of 206

50 Breast SCY

Standard	Cut	Gap
B✓	43.99	−6.77
BB✓	40.89	−3.67
A✓	37.69	−0.47
AA	36.19	+1.03
AAA	34.59	+2.63
AAAA	32.99	+4.23

PBAAA

37.22

2026 PV Cherry Blossom Champs Meet

Mar 1, 2026

LSC

of 205

100 Breast SCY

Standard	Cut	Gap
B✓	1:36.49	−15.57
BB✓	1:29.29	−8.37
A✓	1:22.19	−1.27
AA	1:18.59	+2.33
AAA	1:15.09	+5.83
AAAA	1:11.49	+9.43

PBAAA

1:20.92

2026 FL ISCA East Coast Elite Showcase

Apr 1, 2026

LSC

of 193

200 Breast SCY

3:08.84

2025 PV October Open - Fairland

Oct 11, 2025

LSC

of 72

50 Fly SCY

Standard	Cut	Gap
B✓	36.89	−2.33
BB	34.29	+0.27
A	31.59	+2.97
AA	30.29	+4.27
AAA	28.99	+5.57
AAAA	27.69	+6.87

PBAA

34.56

2026 FL ISCA East Coast Elite Showcase

Apr 3, 2026

LSC

of 199

100 Fly SCY

Standard	Cut	Gap
B	1:25.79	+8.95
BB	1:18.89	+15.85
A	1:12.09	+22.65
AA	1:08.59	+26.15
AAA	1:05.19	+29.55
AAAA	1:01.79	+32.95

PBBB

1:34.74

2026 PV January Open - Fairland

Jan 17, 2026

LSC

132

of 162

200 IM SCY

Standard	Cut	Gap
B✓	3:03.89	−15.01
BB✓	2:50.69	−1.81
A	2:37.59	+11.29
AA	2:30.99	+17.89
AAA	2:24.49	+24.39
AAAA	2:17.89	+30.99

PBA

2:48.88

2026 FL ISCA East Coast Elite Showcase

Apr 4, 2026

LSC

of 174