I played rugby with a guy who got in a national kabadi side after not very long.
Me, none at all. I do wonder how good I could have been at swimming if I'd kept it up though. Did my gold when I was a kid and me and another kid who was a strong county swimming were way ahead of everyone, and I was like a rake without a noticeable muscle on my body.
I ended up 6 4, a strong build and big shoulders.
I never swam a stroke of crawl between the ages of I guess 15 and 45, by when my shoulder was completely knackered from a nerve injury in my neck from rugby. I suddenly decided one day at the beach to see if I could remember how to do crawl, and I could not believe how fast I went.
I honestly got out of the water and people were like staring in astonishment. Gave me a calf strain though which took months to recover from.
Anyway, obviously nowhere near Olympic standard, but I'm sure I could have been a good club swimmer.