Brian Wilczewski is the younger brother of Chris Wilczewski who first competed in American Ninja Warrior 5 and managed to defeat the Circle Cross that took out his brother to make it to Vegas. In Vegas, however, he shocked everyone when his foot slipped on the Timbers, the first obstacle on Stage 1, and failed.
He returned in American Ninja Warrior 6 and managed to make it to Vegas for the second time after finishing in 15th at the St. Louis Qualifiers and 7th at the St. Louis Finals. His brother Chris also got into the Vegas finals, making this season the only one thus far that both Wilczewski brothers competed together at Mt. Midoriyama. In Vegas, Brian made it further than last time, but he got careless and slipped on the Spider Walk portion of the Jumping Spider (in a similar fashion to Isaac Caldiero the previous season).
Similar to his debut in American Ninja Warrior 5, he competed in American Ninja Warrior 7 and finished the qualifying course in Pittsburgh, while his older brother Chris failed qualifying. He made it to the Pittsburgh finals finishing with the 10th fastest time, and made it to the Floating Monkey Bars, where he was one of the many to fall on it. Wilczewski had eventually placed 9th overall and made it to Vegas for the 3rd time in his career. This time, he got past the Jumping Spider and finished Stage One. Brian was later one of many Stage Two competitors to fall on Roulette Row.
However, he returned in American Ninja Warrior 9, competing in Los Angeles this time. His run was all cut from the broadcast, but he managed to finish the qualifying course with the fourth fastest time. In the city finals, Brian fell on the Stair Hopper, but still advanced to the national finals placing 7th. In Las Vegas, in a similar fashion to his first trip to Vegas, he shocked everyone failing Snake Run, the first obstacle of Stage 1, by trying to jump for the second step.
Team Ninja Warrior
He competed on the new Team Ninja Warrior spin-off with his brother Chris and Michelle Warnky. His team name is confirmed to be the "Lab Rats", as the three of them work for the Movement Lab in Ohio. Their team just barely missed out on the championship relay, being beaten by Brian Arnold's team, Party Time.
- With Brian failing the Roulette Row on American Ninja Warrior 7, the fifth obstacle on Stage Two proved to be his best season to date.
- Brian and Chris both attempted the Stair Hopper, with Chris completing it on American Ninja Warrior 8 and Brian failing it in the next season.
|5||72||Failed Timbers (First Stage)|
|6||68||Failed Jumping Spider (First Stage)||Spider Walk portion.|
|7||Failed Roulette Row (Second Stage)||Digest|
|9||Failed Snake Run (First Stage)|