[
www.pro-football-reference.com]
This site credits Goff with '2' Fourth Quarter Comebacks, 2 Game-Winning Drives' but I can't find how many opportunities he's had.
The sites tracks two separate stats - both 4th quarter comeback
and game winning drives. At first I thought they were reporting Goff's feats in 4 games but it is really just 2. (i.e. he had both a 4th quarter comeback and a game winning drive against the Titans on 12/24/17, and pulled the same double against the Seahawks on 10/07/18.)
AlbaNY_Ram