To save some people a click
The Harris campaign has arranged to have a small plane fly over Tuscaloosa during the game with a banner declaring, “Trump’s Punting on 2nd Debate.”
[...]
The Harris campaign will also air a national ad during one of the most highly anticipated games of college football where she calls on the former president to meet her on the debate stage one more time.
“Winners never back down from a challenge,” the ad’s narrator says. “Champions know it’s any time, any place. But losers, they whine and waffle and take their ball home.”
The bigger point is media attention to bring his dodge of a 2nd debate back into memory. Telling it ahead of time gives you twice the coverage on it: news that you're going to do it and coverage after the fact once you have done it
Plus you'll get more people filming and looking out for the plane too