AKICIF: searching for a SF short story

So I'm trying to track down a story which I remember from an anthology which I think was published in the late 1960s or early 1970s. The theme/plot was that somebody invented "combat football" as an alternative to the NFL. The teams wound up being based on racial/ethnic/political stereotypes directly, and the games wound up becoming "watch in person at your own risk." Im not entirely sure if the theme of the anthology was combat/war or not. I'd really like to show it to my spouse if it's out in digital form somewhere...