The Seattle Seahawks ranked 28th in fumbles lost last season. Some of that was bad luck, as Seattle ranked 25th in fumbles per game, and whether a fumble is recovered or not is, if not wholly luck based, entirely unpredictable. That 25th overall ranking was Seattle’s worst showing since 2013. Obviously fumbles are not everything, but they matter, a lot.
As long as Russell Wilson is frequently sacked, and as long as Wilson is frequently sacked mid-scramble, he’s likely to fumble fairly often. But the major surge in fumbling is almost entirely attributable to a rash of butterfingers by Chris Carson.