Whap!
Left hook, upper cut, whap! Whap! Whap, whap! The red punching bag swayed wildly as he delivered blow after blow. Sweat stung his eyes and its repulsive taste seeped into his mouth, but that was nothing new.
"Alright, that's enough, you've been going at it for two hours now. Gotta rest up!"
He lowered his arms and absent-mindedly pushed away the punching bag as it came swinging back towards him. Grabbing the water bottle, he silently reminded himself: two days until fight night.
The music thundered and the lights swung as he walked into the stadium. The walls were shaking, the crowd was on their feet, they were chanting, chanting, but he had to tune it all out, concentrate, focus, concentrate...

He stood up from his corner and cracked his neck. His opponent was a beast of a man, an archetypical monster. But he wasn't afraid; he had studied his opponent for hours, days, weeks; he had jabbed and cut his way through months, seasons, years; he was a monster himself. Sneering, he clapped his gloves together and strode towards the center.
Third round, and he felt the nerves in his arms vibrating gently. Tired? Never. From beneath a dripping brow he eyed his opponent, readying a punch, looking out for an attack, stepping...and then it came. He saw the left glove coming down from the top, and he lifted his right arm to stop it. He blinked away the sweat and suddenly, a red train came barreling right at his eyes and - ! It was over. He hardly felt anything as his legs slowly gave way, his head fell backwards, his arms came down...
He lay, gasping, on the floor. The paparazzi flashes did the blinking for him, and he felt something stinging his eyes. Must be sweat. Something repulsive seeped past his mouthguard. Must be sweat. He licked his mouthguard. No. It was blood, it was blood and his eyes stung with tears, it was blood and tears, and he was seven.
"Henry! Stop hitting him! Please! Honey, Henry, please! He's your son!" His mother's shrill voice rang in the background like that of an announcer shouting numbers. His father towered over him, belt in hand.
No, father. It was not over. No more, no longer. This was what he had been fighting for twenty-some years. He bit down on his mouthguard, slowly steadied himself, and stood up straight to face his opponent.