A torn hamstring hurts.
Once I got to my mid 20s, I had all kind of hamstring problems, but then I tore one.
I played every sport imaginable from the time I was six or seven, and have had just about every injury imaginable...both shoulders, three chipped vertebrae, ankles, hip, fingers, toes, torn Achilles.
I was the original Tyler Naquin.
My doctor said that it was because I spent twenty years running as fast as I could into people and objects bigger than I was....lol.
The absolute worst in terms of pain was that torn hamstring.