A former All-Pro selection as a kick returner, Lockett’s rookie deal was set to expire after the 2018 season.
Lockett has appeared to be back at full speed after playing last year at less than 100 percent following a gruesome broken leg suffered late in the 2016 season. Lockett also played through a knee injury most of the 2017 season, but still appeared in all 16 games and had 45 receptions for 555 yards and two touchdowns.
Lockett was among a handful of key Seattle players whose contracts were set to expire after this season. Left tackle Duane Brown received an extension earlier this summer. Seattle still must make decisions on defensive end Frank Clark and linebacker K.J. Wright.