The Seahawks were known for their choreographed touchdown celebrations past year, which included a baseball themed celebration, the group doing the double dutch, and Lockett imitating Allen Iverson's iconic stepover.
The Seahawks' tight end had an extraordinary season interrupted by a major-looking injury for the second time in his two years in the National Football League on Sunday.
It was announced that he would not return.
Left tackle Duane Brown and right guard D.J. Fluker, both regular starters, are listed as doubtful for the game with injuries.
Team doctor Ed Khalfayan and trainers rushed to Dissly, who stayed down in the end zone for a moment or two. Dissly crumbled to the ground untouched, was helped off the field and examined on the sideline, then carted off.
He led the Seahawks in touchdown receptions (4) and is among the top receivers with 23 catches for 262 yards.
Seattle has two other tight ends on its roster, Luke Willson and Jacob Hollister. He had knee surgery in August.
Dickson was placed on IR the first week of the season and is eligible to return for the game against Tampa Bay on November 3.