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.
(..) and darts and baking.* *Papier-m'ch', a bit of ballet, and chess.* *Then I'll stretch, maybe sketch. Take a climb, sew a dress, and I'll re-read the books.* *If I have time to spare, I'll paint the wall some more, I'm sure there's room somewhere.* *And then I'll brush, and brush, and brush, (..)2010 Tangled