Didn't check where the other series were but the Sunday night lineup refreshed tonight. Sale picked up with John's big win and followed it with what I believe had to be the episode following the two they aired for Buzzr Brackets.
That's correct. Too bad that they skipped John Goss's 2nd to last show, just as GSN did.
BTC started with episode #19 (aired 10/12/79, which I think they have run before) and continued with #20 (aired 10/15/79).
Double Dare started at #21 (1/10/77), and I didn't get far enough this morning to figure out which ep they ran next. I believe they ran DD #22, #24, and #25 during Brackets, so my educated guess would be that they ran #23.
EDITED to correct the airdates for the BTC eps, which I got incorrect in my original posting.