| Richard Wideman defeated Brett Underwood |
2015 Derby City Classic One Pocket |
| Andy Warren defeated Brett Underwood |
2015 Derby City Classic One Pocket |
| Jerry Grooms defeated Brett Underwood |
2015 Derby City Classic 9-Ball |
| Brett Underwood defeated Chris Ramos |
2015 Derby City Classic 9-Ball |
| Brett Underwood defeated Frank Nixon |
2016 Derby City Classic Bank Pool |
| Richie Collins defeated Brett Underwood |
2016 Derby City Classic Bank Pool |
| Rodney Morris defeated Brett Underwood |
2016 Derby City Classic Bank Pool |
| John Brumback defeated Brett Underwood |
2016 Derby City Classic One Pocket |
| Mike Athens defeated Brett Underwood |
2016 Derby City Classic One Pocket |
| Brett Underwood defeated Rashad Brooks |
2016 Derby City Classic 9-Ball |
| Alex Lely defeated Brett Underwood |
2016 Derby City Classic 9-Ball |
| Renaud Berenguier defeated Brett Underwood |
2016 Derby City Classic 9-Ball |
| Brett Underwood defeated Sean Dyson |
2017 Derby City Classic Bank Pool |
| Billy Jackson defeated Brett Underwood |
2017 Derby City Classic Bank Pool |
| Larry Nevel defeated Brett Underwood |
2017 Derby City Classic Bank Pool |
| Brett Underwood defeated Scooby Pelton |
2017 Derby City Classic One Pocket |
| Brett Underwood defeated Andrew Garde |
2017 Derby City Classic One Pocket |
| Efren Reyes defeated Brett Underwood |
2017 Derby City Classic One Pocket |
| Dexter Audain defeated Brett Underwood |
2017 Derby City Classic One Pocket |
| Jody McLaughlin defeated Brett Underwood |
2017 Derby City Classic 9-Ball |
| Jeremy Sossei defeated Brett Underwood |
2017 Derby City Classic 9-Ball |
| Brett Underwood defeated Bobby Alli |
2019 Derby City Classic Bank Pool |
| Nick Giordano defeated Brett Underwood |
2019 Derby City Classic Bank Pool |
| Brett Underwood defeated Paul Spaanstra |
2019 Derby City Classic Bank Pool |
| Andrew Jr Poste defeated Brett Underwood |
2019 Derby City Classic Bank Pool |
| Tony Chohan defeated Brett Underwood |
2019 Derby City Classic One Pocket |
| Russell Parsons defeated Brett Underwood |
2019 Derby City Classic One Pocket |
| Brett Underwood defeated Kyle Ferguson |
2019 Derby City Classic 9-Ball |
| Nathan Burpee defeated Brett Underwood |
2019 Derby City Classic 9-Ball |
| Dee Adkins defeated Brett Underwood |
2019 Derby City Classic 9-Ball |
| Max Eberle defeated Brett Underwood |
2020 Derby City Classic Bank Pool |
| James Flood defeated Brett Underwood |
2020 Derby City Classic Bank Pool |
| Brett Underwood defeated Josh Pyles |
2020 Derby City Classic One Pocket |
| John Morra defeated Brett Underwood |
2020 Derby City Classic One Pocket |
| Tony Chohan defeated Brett Underwood |
2020 Derby City Classic One Pocket |
| Martin Sawinski defeated Brett Underwood |
2020 Derby City Classic 9-Ball |
| Corey Deuel defeated Brett Underwood |
2020 Derby City Classic 9-Ball |
| Darren Appleton defeated Brett Underwood |
2022 Derby City Classic Bank Pool |
| John Lynch defeated Brett Underwood |
2022 Derby City Classic Bank Pool |
| Pijus Labutis defeated Brett Underwood |
2022 Derby City Classic One Pocket |
| David Grossman defeated Brett Underwood |
2022 Derby City Classic One Pocket |
| Martin Warren defeated Brett Underwood |
2022 Derby City Classic 9-Ball |
| Nicholas De Leon defeated Brett Underwood |
2022 Derby City Classic 9-Ball |
| Brett Underwood defeated Kendall Vanover |
2022 Derby City Classic Bank Pool |
| Brett Underwood defeated Frank Spencer |
2022 Derby City Classic One Pocket |
| Brett Underwood defeated David D Walker |
2022 Derby City Classic 9-Ball |
| Brett Underwood defeated Ahmed Alsaedi |
2022 Derby City Classic 9-Ball |
| Brett Underwood defeated Peter Moosbrugger |
2022 Derby City Classic 9-Ball |
| Brett Underwood defeated Michael Ward |
2023 Rack's Carolina Classic 9-Ball |
| Eddie Wahdan defeated Brett Underwood |
2023 Rack's Carolina Classic 9-Ball |
| Brett Underwood defeated John Stallings |
2023 Rack's Carolina Classic 9-Ball |
| Brett Underwood defeated Jeff Abernathy |
2023 Rack's Carolina Classic 9-Ball |
| Brett Underwood defeated Eddie Wahdan |
2023 Rack's Carolina Classic 9-Ball |
| Brett Underwood defeated Chris Worsham |
2023 Rack's Carolina Classic 9-Ball |
| Brett Underwood defeated Eric Decosta |
2023 Rack's Carolina Classic 9-Ball |
| John Stallings defeated Brett Underwood |
2023 Rack's Carolina Classic 9-Ball |
| Brett Underwood defeated Tony Coleman |
2023 Derby City Classic Bank Pool |
| Brett Underwood defeated Rodney Wright |
2023 Derby City Classic Bank Pool |
| Brett Underwood defeated Mark Anderson |
2023 Derby City Classic Bank Pool |
| Danny Olson defeated Brett Underwood |
2023 Derby City Classic Bank Pool |
| Joshua Filler defeated Brett Underwood |
2023 Derby City Classic Bank Pool |
| Marty Turpin defeated Brett Underwood |
2023 Derby City Classic One Pocket |
| Brett Underwood defeated Brandon Howard |
2023 Derby City Classic One Pocket |
| Brett Underwood defeated Kyle Ferguson |
2023 Derby City Classic One Pocket |
| Brett Underwood defeated Chris Salmons |
2023 Derby City Classic One Pocket |
| Dennis Wilson defeated Brett Underwood |
2023 Derby City Classic One Pocket |
| Brett Underwood defeated Jeff Freeman |
2023 Derby City Classic 9-Ball |
| Max Eberle defeated Brett Underwood |
2023 Derby City Classic 9-Ball |
| Brett Underwood defeated Russell Carter |
2023 Derby City Classic 9-Ball |
| Brett Underwood defeated Chris Helman |
2023 Derby City Classic 9-Ball |
| Michael Levick defeated Brett Underwood |
2023 Derby City Classic 9-Ball |
| Brett Underwood defeated Dusty Yeager |
2024 Derby City Classic One Pocket |
| Brett Underwood defeated Bernell Dartez |
2024 Derby City Classic One Pocket |
| David Brown defeated Brett Underwood |
2024 Derby City Classic One Pocket |
| Oscar Dominguez defeated Brett Underwood |
2024 Derby City Classic One Pocket |