Actually, the main character in "
Bound and gagged in a sleeping bag" is a professional swimmer in his 20s who gets kidnapped by his best friend and turned into an unwilling sub. The main character's principal rival is another professional swimmer also in his 20s.
You might enjoy the story as much as the other M/M readers on this site, but please beware, this is PG-17 material.
viewtopic.php?f=85&t=10692