cut (one) down in (one's) prime

cut (one) down in (one's) prime

To cause the sudden end of something, such as one's life, when one is at the peak of their skill or physical ability, or in their most successful or productive period. It's so tragic that cancer cut that renowned tennis player down in his prime. Yeah, I used to lift weights, but chronic injuries cut me down in my prime.
See also: cut, down, prime

cut someone off (or down) in their prime

bring someone's life or career to an abrupt end while they are at the peak of their abilities.
See also: cut, off, prime, someone