Dragon Ball Super

Frieza and Goku continue their protracted battle with Frieza landing more blows on Goku than can be returned. Unable to match Frieza's raw power, Goku manages to withstand and dodge Frieza's attacks. Goku and Vegeta notice that Frieza is progressively losing stamina and that his power level is dropping. Frieza himself fails to notice this. Vegeta urges Goku to quickly finish Frieza off before he has a chance to recover, or he will step up and do so himself. After Goku and Frieza exchange some sarcastic banter, they power up again and continue their fight. Frieza still has the upper hand, but Goku realizes he only needs to stall Frieza long enough for his weakness to reappear. After a fully powered Frieza unleashes a barrage of attacks, he quickly becomes tired and starts running out of breath Frieza's attacks no longer hurt Goku. Frieza finally realizes his weakness, which is a lack of endurance. His Golden form exhausts more energy than he can produce. Goku explains this is because Frieza rushed to Earth immediately after achieving the Golden form without giving himself enough time to master it. Frieza agonizes over his failed chance at revenge in combat, but mouths a few inaudible words to Sorbet for assistance. Goku tells Frieza to leave Earth, while he still can do so. Everyone is surprised to see a laser beam pierce Goku's chest from behind, which was fired from Sorbet's ray gun. Stomping on Goku's chest wound to make him scream, Frieza gloats about his backup strategy to have Goku let his guard down. Frieza mocks him by claiming Goku's overconfidence prevents him from being the strongest fighter. Before Frieza can unleash his killing shot on Goku, Vegeta fires at Frieza and announces that it is his turn to fight.