| Date | Location | Result | |
| May 2, 2018 | Newburgh, NY | Mount Saint Mary 9, Old Westbury 8 | Box score |
| Apr 28, 2018 | Throggs Neck, NY | Maritime 7, Old Westbury 6 | Box score |
| Apr 28, 2018 | Throggs Neck, NY | Maritime 10, Old Westbury 9 | Box score |
| Apr 24, 2018 | Patchogue, NY | Old Westbury 6, St. Joseph's (Bklyn) 1 | Box score |
| Apr 24, 2018 | Patchogue, NY | Old Westbury 12, St. Joseph's (Bklyn) 5 | Box score |
| Apr 22, 2018 | Old Westbury, NY | Old Westbury 15, Yeshiva 2 | Box score |
| Apr 22, 2018 | Old Westbury, NY | Old Westbury 13, Yeshiva 1 | Box score |
| Apr 21, 2018 | Old Westbury, NY | Old Westbury 5, Mount Saint Vincent 1 | Box score |
| Apr 21, 2018 | Old Westbury, NY | Old Westbury 9, Mount Saint Vincent 6 | Box score |
| Apr 20, 2018 | Old Westbury, NY | Old Westbury 10, Lehman 9 | Box score |
| Apr 18, 2018 | Mahwah, NJ | Ramapo 5, Old Westbury 0 | Box score |
| Apr 14, 2018 | Old Westbury, NY | Old Westbury 9, St. Joseph's (L.I.) 8 | Box score |
| Apr 14, 2018 | Old Westbury, NY | Old Westbury 15, St. Joseph's (L.I.) 6 | Box score |
| Apr 11, 2018 | Old Westbury, NY | Old Westbury 8, Stevens 5 | Box score |
| Apr 10, 2018 | Bronx, NY | Lehman 12, Old Westbury 5 | Box score |
| Apr 8, 2018 | Farmingdale, NY | Old Westbury 4, Farmingdale State 3 | Box score |
| Apr 8, 2018 | Farmingdale, NY | Farmingdale State 3, Old Westbury 0 | Box score |
| Apr 7, 2018 | Kings Point, NY | Old Westbury 9, USMMA 5 | Box score |
| Apr 7, 2018 | Kings Point, NY | USMMA 6, Old Westbury 4 | Box score |
| Apr 5, 2018 | Patchogue, NY | Mount Saint Mary 16, Old Westbury 8 | Box score |
| Apr 5, 2018 | Patchogue, NY | Mount Saint Mary 8, Old Westbury 4 | Box score |
| Mar 29, 2018 | Old Westbury, NY | New Jersey City 10, Old Westbury 5 | Box score |
| Mar 28, 2018 | Poughkeepsie, NY | Vassar 10, Old Westbury 4 | Box score |
| Mar 25, 2018 | Purchase, NY | Purchase 5, Old Westbury 0 | Box score |
| Mar 25, 2018 | Purchase, NY | Old Westbury 5, Purchase 4 | Box score |
| Mar 22, 2018 | Fort Myers, FL | Old Westbury 9, Plymouth State 3 | Box score |
| Mar 21, 2018 | Fort Myers, FL | Old Westbury 10, Plymouth State 7 | Box score |
| Mar 19, 2018 | Fort Myers, FL | Johns Hopkins 14, Old Westbury 8 | Box score |
| Mar 18, 2018 | Fort Myers, FL | Old Westbury 4, St. Lawrence 3 | Box score |
| Mar 18, 2018 | Fort Myers, FL | St. Lawrence 7, Old Westbury 6 | Box score |
| Mar 17, 2018 | Fort Myers, FL | NYU 9, Old Westbury 8 | Box score |
| Mar 17, 2018 | Fort Myers, FL | NYU 19, Old Westbury 10 | Box score |
| Mar 15, 2018 | Flemington, NJ | Old Westbury 7, Montclair State 4 | Box score |
| Mar 3, 2018 | Yaphank, NY | Baruch 10, Old Westbury 10 | Box score |
| Mar 3, 2018 | Yaphank, NY | Old Westbury 8, Baruch 0 | Box score |
| Feb 26, 2018 | Union, NJ | Old Westbury 2, Kean 1 | Box score |