[2] In 2010, Brown began competing in the Whelen All-American Series with family-owned Brandonbilt Motorsports,[3] winning a race and eventually the Virginia Rookie of the Year Award.

At the Sparks 300 at Talladega in October 2021, Brown was in contention throughout the latter part of the race after escaping the first big wreck that took place on lap 88.

With a push from behind, Brown, who was not in the playoffs, was able to narrowly get ahead of Brandon Jones and Justin Allgaier in time when the final caution of the race came out with 13 to go due to another big crash.

The race was ultimately called with five laps to go due to darkness, and Brown would score his first career Xfinity Series win in his 114th start.

[15] The video paid off as Brandonbilt Motorsports announced they had secured enough sponsorship, including one from American PetroLog,[16] a provider of logistics services for the petrochemical industry, as well as cryptocurrency company TradeTheChain.com, to finish off the rest of the season.

[17] After his first win at Talladega, Brown was being interviewed at the start-finish line by NBC Sports reporter Kelli Stavast, when many in the crowd began to chant "Fuck Joe Biden.

[23] His plan originally was to simply ignore the phrase, but as several months passed and it remained in widespread use, he worried that his silence was perceived as a tacit endorsement of the sentiment.

[24][25] In December 2021, he broke his silence on the matter in an interview with The New York Times in which he stated that, though he was a Republican, he wanted "to appeal to everybody" and had "zero desire to be involved in politics".

[23] He also published an op-ed in Newsweek, in which he took a more mixed stance, stating that he was "not going to endorse anyone", but that he was "not going to hesitate to speak about issues I am passionate about, or the problems we face together as Americans".

[9][14] Brown's father and team owner, Jerry, underwent "aggressive" treatment for cancer after being diagnosed during a routine check-up on April 7, 2020.