Michael Sprottis a British professional boxer. He is a former British and Commonwealth heavyweight champion, and has challenged for the European title. He was the winner of the 14th Prizefighter series... (wikipedia)
I've also been sparring Sherman Williams and a few other decent heavyweights.
Anyone can quit, it's easy. I believe it's much better to grit your teeth and get on with things,
Back in those days it was all about learning,
I let myself down, ... It was a poor performance and got beat fair and square but I'll bounce back.