Brandon Brennan - RHP - Orange Coast College - YouTube
How technology ID'd Brandon Brennan's secret weapon — and added it to the Mariners' bullpen – The Athletic
Amazon.com: 2019 Topps Update (Series 3) Gold SER2019#US11 Brandon Brennan RC Rookie Seattle Mariners Official Baseball Trading Card: Collectibles & Fine Art
Seattle Mariners: Looking Ahead On 2019 Season
Mariners Reinstate RHP Brandon Brennan from 10-Day IL; Reinstate INF Tim Lopes from 7-Day Concussion List | by MarinersPR | From the Corner of Edgar & Dave
Amazon.com: 2019 Topps Heritage High Number #672 Brandon Brennan Seattle Mariners Baseball Rookie Card: Collectibles & Fine Art