Not the Saturday Prize Puzzle – 077
Rivals by Radler
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Welcome to the latest in our series of weekly puzzles.
This week we have a themed puzzle from Radler. Although I was unfamiliar with the theme, I completed all but a handful of the answers before resorting to the relevant Wikipedia page.
The puzzle by Radler is available by clicking here:

Feel free to leave comments about this puzzle on this post.
A brilliant Radler – unlike BD I was (tragically?!) aware of all the themed connections. More of the same please.
Ditto to that. I’ll post a review later when I have dropped the boys off (a) the edge of a cliff (b) at their PGL holiday, whichever occurs first
Thanks to Radler for the enjoyable entertainment. I was surprised to find out that I had heard of quite a few of the rivals, but had to resort to the Wiki page for others. Favourite clues: 11a, 4d and 13d.