Best Upsets (2020)
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How the FanLax Computer Rankings Work
Sports / Lacrosse / College Men / Division 1 (2020)
| – | Team | Rank | VS | Rank | Opp Team | Details |
| 1 | Harvard | #36 | 10 - 9 | #11 | Massachusetts | 02/22/2020 |
| 2 | Air Force | #34 | 14 - 13 | #10 | Duke | 02/01/2020 |
| 3 | Marist | #39 | 17 - 9 | #18 | Army West Point | 02/18/2020 |
| 4 | Drexel | #35 | 15 - 12 | #14 | Villanova | 03/08/2020 |
| 5 | Cleveland St. | #54 | 12 - 11 | #34 | Air Force | 02/22/2020 |
| 6 | Merrimack | #62 | 14 - 12 | #44 | Michigan | 02/22/2020 |
| 7 | Brown | #26 | 14 - 13 | #9 | Virginia | 03/08/2020 |
| 8 | High Point | #47 | 16 - 15 | #35 | Drexel | 02/15/2020 |
| 9 | Stony Brook | #37 | 11 - 10 | #26 | Brown | 02/22/2020 |
| 10 | Villanova | #14 | 13 - 12 | #4 | Maryland | 02/18/2020 |
| 11 | Detroit Mercy | #55 | 15 - 14 | #48 | Jacksonville | 02/01/2020 |
| 12 | Army West Point | #18 | 17 - 4 | #11 | Massachusetts | 02/08/2020 |
| 13 | Penn | #17 | 14 - 11 | #10 | Duke | 02/22/2020 |
| 14 | Notre Dame | #29 | 13 - 5 | #22 | Richmond | 02/23/2020 |
| 15 | Jacksonville | #48 | 15 - 8 | #43 | Robert Morris | 02/23/2020 |
| 16 | Marquette | #58 | 11 - 10 | #54 | Cleveland St. | 02/01/2020 |
| 17 | Bellarmine | #70 | 13 - 5 | #66 | St. Bonaventure | 02/15/2020 |
| 18 | Yale | #7 | 12 - 10 | #3 | Penn St. | 02/22/2020 |
| 19 | Massachusetts | #11 | 13 - 10 | #7 | Yale | 02/29/2020 |
| 20 | Harvard | #36 | 15 - 12 | #32 | Fairfield | 03/07/2020 |
| 21 | Bryant | #41 | 15 - 11 | #37 | Stony Brook | 03/07/2020 |
| 22 | Massachusetts | #11 | 9 - 7 | #8 | Ohio St. | 02/15/2020 |
| 23 | Manhattan | #68 | 10 - 8 | #65 | VMI | 02/15/2020 |
| 24 | Marquette | #58 | 16 - 5 | #55 | Detroit Mercy | 02/22/2020 |
| 25 | Wagner | #74 | 9 - 8 | #71 | LIU | 02/15/2020 |