The marquee trade deadline addition worked six innings against the Miami Marlins, allowing just one run and two hits while striking out nine. Of his 87 pitches, 55 of them were strikes.
The one run he allowed was a full-count solo home run to Javier Sanoja in the second.
The Blue Jays helped out their starter with some run support, batting in three before Bieber first took to the mound.
The right-hander already owned impressive career numbers, posting a 3.23 ERA and a 62-32 record in 845 innings over his seven-season career, taking home a Cy Young Award in 2020.
Bieber, who previously spent his entire career with the Cleveland Guardians organization, was shut down in April 2024 after just two starts when he underwent Tommy John surgery to repair his UCL.
The Blue Jays acquired the California native at the 2025 deadline, sending prospect Khal Stephen to Cleveland in exchange.