He began to play the
International Racquetball Tour full time in the 2015–16 season, as he played 8 of the 14 events reaching one semi-final and one quarterfinal resulting in a final ranking of 13. At the 2016 USAR National Singles Championship, Bredenbeck lost to Diaz in the semi-finals, 15–10, 15–12. At the 2016
Pan American Championships, Bredenbeck played both singles and doubles, and reached the podium in both divisions. In singles, he reached the final by defeating Canadian
Samuel Murray, 15–1, 13–15, 11–8, in the quarterfinals, and Mexican
Javier Mar, 15–8, 14–15, 11–6, in the semi-finals, but lost the final to Mexican
Daniel De La Rosa, 15–2, 15–1. In doubles he and David Horn lost in the semi-finals to Ecuadorians Fernando Rios and Jose Daniel Ugalde, 9–15, 15–1, 11–4. Bredenbeck was on Team USA for the
2016 World Championships in Cali, Colombia, where he played
Men's doubles with Jose Diaz. They defeated Bolivians Kadim Carrasco and
Carlos Keller, 15–14, 8–15, 11–8, in the semi-finals, but lost to Mexicans
Alvaro Beltran and Javier Moreno, 15–12, 15–9. At the 2016 US Open, Bredenbeck got to the quarterfinals for the first time by defeating Javier Mar in the Round of 16, 11–2, 11–5, 4–11, 12–10, but in the quarters he lost to
Daniel De La Rosa, 8–11, 11–1, 11–5, injury forfeit. In doubles, he and Jose Diaz defeated
Sebastian Franco and
Mario Mercado in the quarterfinals, 15–13, 10–15, 11–7, but lost to De La Rosa and Edson Martinez, 15–3, 15–12, in the semi-finals. Bredenbeck was a quarterfinalist at both US championships in 2017. At the 2017 USAR Doubles Championships, he and Anthony Herrera lost in the quarters to Robert Collins and David Horn, 15–10, 15–6. Then at the 2017 USAR Singles Championships, Bredenbeck lost to Jose Diaz, 6–15, 15–12, 11–6, in the quarters. Bredenbeck played doubles with David Horn at the 2017 Pan American Championships in San José, Costa Rica, where they reached the final by defeating Roland Keller and
Conrrado Moscoso, 15–12, 15–7, in the semi-finals, but lost the final to Polo Gutierrez and
Alejandro Landa, 10–15, 15–8, 11–4. At the 2017 US Open, Bredenbeck came back from two games down to defeat Jose Diaz in the Round of 32, 9–11, 8–11, 11–9, 11–9, 11–1, and then lost in the Round of 16 to
Kane Waselenchuk, 11–3, 11–4, 11–4. In doubles, he and Diaz beat Kadim Carrasco and
Carlos Keller, 15–5, 15–5, but lost to
Jansen Allen and
Samuel Murray, 10–15, 15–7, 11–6. Bredenbeck played with Jose Diaz at the 2018 USA Racquetball Doubles Championships, and they finished 3rd. They lost to David Horn and Mauro Rojas in the quarterfinals, 15–10, 5–15, 11–8. But they defeated Adam Manilla and Nicolas Riffel for 3rd, 15–10, 14–15, 11–4. At the 2018 USAR Singles Championships, Bredenbeck lost to
Jose Rojas, 12–15, 15–10, 11–9, in the quarters. Bredenbeck lost in the Round of 16 at the 2018 US Open to
Alejandro Landa, 15–9, 15–1, but reached the semi-finals in doubles with Jose Diaz by defeating
Andrés Acuña and Felipe Camacho in the Round of 16, 15–13, 11–15, 11–8, and
Sebastian Franco and
Mario Mercado in the quarterfinals, 14–15, 15–11, 11–10. They lost to
Ben Croft and
Kane Waselenchuk, 15–13, 15–6, in the semi-finals. Bredenbeck and Jose Diaz were runners-up at the 2019 USAR Doubles Championships, as they lost to
Rocky Carson and Charlie Pratt, 15–8, 5–15, 11–7, in the final. They defeated David Horn and Mauro Rojas, 15–9, 15–11, in the semi-finals. Bredenbeck played at the 2019 Pan American Championships in Barranquilla, Colombia, where he and Mauro Rojas lost to Canadians
Coby Iwaasa and
Samuel Murray, 13–15, 15–1, 11–7, in the quarterfinals. Bredenbeck won a 3rd USA Racquetball Singles Championships in 2019. He defeated Robert Collins, 15–4, 15–2, in the quarterfinals, Adam Manilla, 15–12, 7–15, 11–5, in the semi-finals, and David Horn, 15–1, 15–1, in the final. It was his first win since back to back titles in 2014 and 2015. At the
2019 Pan American Games, Bredenbeck played singles and in the team event.
In Men's Singles, he lost to Colombian
Mario Mercado, 15–8, 8–15, 11–8, in the quarterfinals. In the Men's Team event, the USA beat Costa Rica in the quarterfinals, but lost to Bolivia in the semi-finals, resulting in a bronze medal. Bredenbeck lost in the Round of 16 at the 2019 US Open to
Daniel De La Rosa, 15–10, 15–11, after beating
Jansen Allen in the Round of 32, 15–12, 15–9. He won again played doubles with Jose Diaz, and they lost to Kadim Carrasco and
Carlos Keller in the Round of 16, 6–15, 15–9, 11–8. At the 2020 USA Racquetball Doubles Championships, Bredenbeck and Jose Diaz defeated David Horn and Eric Garcia in the quarterfinals, 11–15, 15–5, 11–3, but lost to
Alejandro Landa and
Sudsy Monchik in the semi-finals, 15–13, 4–15, 11–9. In the 2019–20 IRT season, Bredenbeck got to his 2nd semi-final and reached the top 10 for the first time with a season ending ranking of No. 10. == 2021 to present – IRT finals and wins ==