The San Francisco 49ers made no announcement, but when I reached out to them, they said their game against Seattle also sold enough tickets to avoid an NFL blackout locally.
Thom Brennaman, Brian Billick and Laura Okmin will call the Rams' game against Philadelphia for Fox at 1 p.m. ET. They comprise the No. 3 crew as defined by Fox.
Sam Rosen, Chad Pennington and Jody Jackson are calling the Cardinals game against Carolina as part of a revised No. 7 crew for Fox. Rosen's former partner, 49ers preseason analyst Tim Ryan, is working with Chris Myers on the No. 5 crew.
Dick Stockton, John Lynch and Jaime Maggio are calling the 49ers' game against Seattle as part of a revised No. 4 crew.