NBC has changed this Saturday again. And although APT doesn't mention it, my guess is there's no NHL on Sunday, too.
Not only will there not be NHL on Saturday, but they've now dropped the half hour "bonus Derby coverage" they announced late Tuesday night, which replaced World Of Adventure at 3:30p. So, that gets deleted from client inventory. Thanks, NBC!
So, NBC local stations have lots of weekend hours to fill with local programming and ads. Client stations who provide fill-in programming to RDRx get them listed as such.