Summary
- Conor McGregor has withdrawn from his UFC 303 fight against Michael Chandler due to an injury
- The main event will now feature a light heavyweight title rematch between Alex Pereira and Jiri Prochzka
- McGregor last won a title fight in 2016 and has been away from UFC for almost three years
- UFC 303 shake-up also includes new co-main event between Brian Ortega and Diego Lopes
