A corner retirement (RTD) or corner stoppage are terms used in boxing to describe a fight that ends when, during any rest period between rounds, a boxer themselves refuses to continue or their corner pulls them out, thereby forcing the referee to call an end to the fight. In contrast, a technical knockout (TKO) may only be declared by the referee or ringside doctor, at any stage of the fight including rest periods. In either case, an RTD still counts as a type of knockout, and is displayed as a stoppage result on a boxer's win/loss record.
- Staff (2 October 2014). "On This Day: Larry Holmes thrashes the remnants of Muhammad Ali". Boxing News. Newsquest. Retrieved 29 March 2016.
- Bonnett, Derek (29 March 2015). "On the Move: SecondsOut World Rankings 3-29-15". SecondsOut. Knockout Entertainment Ltd. Retrieved 29 March 2016.
- Gray, Tom (21 March 2015). "Braehmer defeats Krasniqi, forces corner retirement". The Ring. Retrieved 29 March 2016.
- Campbell, Brian (19 August 2015). "Sanchez disagrees that Lemieux is GGG's toughest test". ESPN. Retrieved 30 March 2016.
- Ortega, Mark E. (20 October 2013). "Provodnikov wears down Alvarado to stoppage". The Ring. Retrieved 30 March 2016.