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]
(..) I will never marry and I will never father children. Brother Loras... ...I ask you to dedicate your life to the seven gods. Will you fight to defend your faith against heretics and apostates? I will. No, I can't let them... Faith is the way, Father. All right. (..)2016 TvShow: Game of Thrones Title: The Winds of Winter Season: 6 Episode 10