Jun 15 2024: Vaughan O'Brien DNF'ed at the Men Master 45+ Race at the The James P. Bellora Memorial Giro di Coppi in a group sprint

Aug 25 2023: Vaughan O'Brien DNF'ed at the Men Masters 45-49 Cat 123 Race at the 2023 USA Cycling Masters & Para-cycling Road National Championships in a group sprint

May 17 2023: Vaughan O'Brien places 36th at the Men Open A Race at the Greenbelt Park Training Race in a group sprint