He\/She\/They\/You are challenged.

I felt discouraged after the defeat.

They challenged fate and won.

The challenger is preparing the strategy for the race.

It's a challenging task, but I'm sure I can complete it.

The challenger showed great determination during the race.

The challenged boys won the game.

I like to challenge myself every day.

If we challenged fate, we could change the course of events.

I used to challenge my friend to a running race every week.