[Uncle Chip]

Riggs had defeated the #1 female tennis player in the world (Margaret Court) a few months before

That's new to me but it's true -- Mother's Day 1973 in San Diego.

Was this match ever publicized or televised???

[AuH2ORepublican]

It certainly wasn’t publicized to the same extent as the one against King. And if this article is anywhere near the truth, the prior match merely was a set-up for a big payday for the fixed match against King: http://espn.go.com/espn/feature/story/_/id/9589625/the-match-maker