The Seattle Seahawks are taking a big risk this coming season in replacing quarterback Geno Smith with Sam Darnold. Smith wasn't the best quarterback in the NFL, but the team knew what they were going to get from him, and he was mostly solid. The team doesn't know what it will get from Darnold.
Seattle's new QB1 has spent seven seasons in the NFL, but only one was good. In some others, he didn't play much because he was a backup. To begin his career, he was thrown to the wolves with the New York Jets and failed badly.