They felt they 'had' the win/game 'sewn up'. [=they felt that they were certainly going to win]
She designs her own dresses and 'sews' in her free time.
He scored a touchdown that 'sewed up' the win/game.
(..) Lucky you caught me. Was about to go home. I don't feel so lucky right now. I can barely find any skin you haven't torn to sew back together. Jesus! I did the best I could. Put on your pants. Carefully. If it happens again, you're (..)2016 TvShow: Shameless Title: Swipe, Fuck, Leave Season: 7 Episode 2