After riding for Kawasaki, Razgatlıoğlu rode a factory-team Yamaha YZF-R1 from 2020 until 2023, winning the 2021 Superbike World Championship, ending Jonathan Rea's six-year reign.

His father died, together with his girlfriend who was riding on the pillion seat, following a motorcycle accident in Antalya on 17 November 2017.

[4] He won his debut race in the European Superstock 600 Championship on 5 October 2014 at Magny Cours aboard a Kawasaki ZX-6R.

Due to not being allowed to ride with the other two taking turns throughout the race, Razgatlıoğlu soon left the Kawasaki marque to become a factory Yamaha rider from 2020.

[9] Razgatlıoğlu was offered a test on 22/23 November with gagging conditions attached, but chose to wait until 4 December when out of contract to Yamaha.

[18] Razgatlıoğlu crashed heavily during free practice at Magny-Cours and was ultimately diagnosed with a back contusion; the session was red-flagged as a result.

[23] Nicknamed El Turco, Razgatlıoğlu is managed by former multiple time WSSP champion Kenan Sofuoğlu.