Best Upsets (2020)
Rankings / Best Games / Best Upsets / Best Upcoming Games
How the FanLax Computer Rankings Work
Sports / Lacrosse / High School Boys / National
| – | Team | Rank | VS | Rank | Opp Team | Details |
| 1 | Alamo Heights | #1043 | 9 - 5 | #153 | Dripping Springs | 02/29/2020 |
| 2 | Huntington Beach | #860 | 9 - 8 | #114 | Aliso Niguel | 02/26/2020 |
| 3 | Pinnacle | #1121 | 10 - 9 | #401 | Oro Valley | 02/29/2020 |
| 4 | Corona del Sol | #942 | 14 - 13 | #321 | Chandler AZ | 02/26/2020 |
| 5 | Chaparral AZ | #1109 | 12 - 11 | #521 | Cactus | 02/21/2020 |
| 6 | Central Hardin | #1210 | 11 - 7 | #640 | Collins | 03/11/2020 |
| 7 | Smithson Valley | #955 | 17 - 7 | #399 | Boerne | 03/05/2020 |
| 8 | Damien | #1077 | 15 - 12 | #526 | Crescenta Valley | 02/19/2020 |
| 9 | Foothills Christian | #1184 | 9 - 3 | #666 | Lincoln San Diego | 03/04/2020 |
| 10 | Clayton Valley | #708 | 11 - 6 | #192 | Miramonte | 02/28/2020 |
| 11 | Archer | #843 | 11 - 10 | #342 | Whitewater | 02/18/2020 |
| 12 | Captain Shreve | #1010 | 9 - 8 | #536 | Airline | 02/21/2020 |
| 13 | Niceville | #810 | 9 - 6 | #338 | Pensacola Catholic | 02/17/2020 |
| 14 | Coronado CA | #541 | 13 - 5 | #71 | Bishops School | 03/04/2020 |
| 15 | Wiregrass Ranch | #699 | 8 - 6 | #236 | Bloomingdale | 02/21/2020 |
| 16 | Alamo Heights | #1043 | 9 - 5 | #584 | Dripping Springs II | 02/29/2020 |
| 17 | Magnolia | #1069 | 10 - 3 | #611 | St Thomas TX | 02/01/2020 |
| 18 | Northwood CA | #551 | 13 - 7 | #100 | Dana Hills | 03/02/2020 |
| 19 | Petaluma | #1041 | 6 - 5 | #603 | Rancho Cotate | 02/27/2020 |
| 20 | St Thomas More LA | #665 | 8 - 7 | #237 | St Pauls LA | 02/14/2020 |
| 21 | Coral Shores | #983 | 9 - 7 | #572 | Florida Christian | 03/06/2020 |
| 22 | Sequoia | #1040 | 8 - 5 | #637 | Valley Christian | 02/25/2020 |
| 23 | Wesleyan | #738 | 18 - 2 | #348 | Oconee County | 02/26/2020 |
| 24 | St Marys Hall | #1196 | 12 - 2 | #807 | Harlan | 02/15/2020 |
| 25 | Porter-Gaud | #522 | 17 - 5 | #137 | Oceanside Academy | 03/10/2020 |