boxer's umbrella

He is a famous former boxer, but he is now retired from the ring and prefers not to be talked about anymore. It is true that his name is irrelevant. Every evening, we went to a cafe near his accommodation for a drink. One day, wanting to go home, he looked for his umbrella and couldn't find it. The next day, he bought another pip and the same misfortune happened to him.

Not doubting that he was dealing with a trickster, he bought a third umbrella, hung it up and attached his card with these words:
“Boxing champion, light heavyweight."
« My punch weights 149 pounds ! »

When he came to look for his property, he only found his card, with this response on the back:
“ X... Running champion."
« Does 19 kilometers per hour ».