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]
(..) Let me lead you! Oh, no. I was expecting a giant car. Come here! We're giving you freedom. You defend my family, or die. Autobots, we're going to prove who we are and why we're here! Ugh, you just want (..)2014 Transformers: Age of Extinction
(..) from the government. Mr. Yeager, who do you think I work for? You're trying to protect your family, that's admirable. I'm trying to defend the nation from alien war. We've had a taste of what that looks like, and we are not gonna tolerate another. Now... (..)2014 Transformers: Age of Extinction