The team is looking to 'defend' its national title. [=to win the national title again]
As a U.S. senator, it is my responsibility to 'defend' [='uphold'] the Constitution.
She successfully 'defended' her championship. [=she won the championship again]
(..) - The time has come. - The time for what? For you to become me. But am I ready? No. We can't defend the north from the walkers and the south from the Boltons. If we want to survive, we need Winterfell and to take Winterfell, (..)2016 TvShow: Game of Thrones Title: The Door Season: 6 Episode 5
(..) (ice crackling) (gasps) It was you. You made the white walkers. We were at war. We needed to defend ourselves. From whom? From you. From men. Aeron: We speak in the presence of the Drowned God. (..)2016 TvShow: Game of Thrones Title: The Door Season: 6 Episode 5