Had he done that, the Packers might have been able to run out the clock and head to the Super Bowl with a 19-14 victory.
Instead, the Green Bay Packers backup tight end went for the ball, and it bounced off his hands, allowing Seahawks receiver Chris Matthews to recover it. It was a key play in the Seahawks' 28-22 overtime victory.
Bostick, one of the blockers on the left side of the formation, is supposed to clear the way for hands-team specialist Jordy Nelson to field it.
"I let my team down, I feel like," Bostick said. "There was a lot on this game. I just feel like if I was able to do my job -- my assignment was to block -- Jordy would've caught the ball and the game would've been over."
The Seahawks needed only four plays to go 50 yards and take a 22-19 lead on Marshawn Lynch's 24-yard touchdown run with 1:25 remaining.
"I felt like I had my hands on the ball," Bostick said. "It just slipped away, I guess. I just got hit and didn't have the ball."
After the play, Bostick got an earful on the sideline from special-teams coach Shawn Slocum, whose unit also got burned on a fake field goal for a touchdown in the third quarter.
"Brandon, just like anything, you get into one of those critical spots, it is important for everybody to do their job," Packers coach Mike McCarthy said. "Unfortunately that wasn't the case on that play. And that's the result of it."