Best Upsets (2020)
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How the FanLax Computer Rankings Work
Sports / Lacrosse / High School Boys / HSB West (2020)
| – | Team | Rank | VS | Rank | Opp Team | Details |
| 1 | Corona del Sol | #242 | 14 - 13 | #53 | Chandler AZ | 02/26/2020 |
| 2 | Servite | #198 | 10 - 9 | #34 | Santiago | 02/19/2020 |
| 3 | Foothills Christian | #257 | 9 - 3 | #95 | Lincoln San Diego | 03/04/2020 |
| 4 | Pinnacle | #244 | 10 - 9 | #100 | Oro Valley | 02/29/2020 |
| 5 | Sage Creek | #226 | 17 - 10 | #93 | Mar Vista | 03/02/2020 |
| 6 | Helix Charter | #228 | 16 - 11 | #97 | El Capitan | 02/28/2020 |
| 7 | Menlo School | #178 | 20 - 1 | #63 | Sacred Heart Cathedral | 03/11/2020 |
| 8 | Woodlands | #103 | 12 - 4 | #6 | Tesoro | 03/07/2020 |
| 9 | Woodlands | #103 | 10 - 4 | #8 | La Costa Canyon | 03/09/2020 |
| 10 | Huntington Beach | #142 | 9 - 8 | #49 | Aliso Niguel | 02/26/2020 |
| 11 | Olympus | #181 | 9 - 8 | #89 | Mountain Ridge UT | 03/11/2020 |
| 12 | Valencia-Placentia | #258 | 8 - 7 | #175 | Eleanor Roosevelt CA | 02/21/2020 |
| 13 | Newbury Park | #119 | 9 - 4 | #36 | San Marcos-SB | 02/26/2020 |
| 14 | Northwood CA | #113 | 13 - 7 | #38 | Dana Hills | 03/02/2020 |
| 15 | Damien | #165 | 15 - 12 | #92 | Crescenta Valley | 02/19/2020 |
| 16 | San Clemente | #104 | 15 - 9 | #32 | Edison CA | 03/03/2020 |
| 17 | Lick-Wilmerding | #151 | 7 - 4 | #81 | Cardinal Newman CA | 03/06/2020 |
| 18 | San Clemente | #104 | 16 - 8 | #34 | Santiago | 03/07/2020 |
| 19 | San Dieguito | #164 | 15 - 9 | #97 | El Capitan | 02/25/2020 |
| 20 | Valencia-Santa Clarita | #221 | 7 - 6 | #156 | Dos Pueblos | 03/03/2020 |
| 21 | Woodrow Wilson CA | #166 | 8 - 6 | #101 | El Dorado | 02/19/2020 |
| 22 | Vista del Lago | #144 | 7 - 3 | #81 | Cardinal Newman CA | 02/29/2020 |
| 23 | Desert Mountain | #235 | 13 - 12 | #172 | Red Mountain | 02/26/2020 |
| 24 | Amador Valley | #130 | 13 - 6 | #69 | Clayton Valley | 02/25/2020 |
| 25 | Del Norte | #224 | 10 - 3 | #164 | San Dieguito | 03/06/2020 |