Professional athletes are some of the most admired people on the planet. But who do they admire?
More specifically, what other types of athletes do they look at and marvel? What types of sports boggle the minds of the world's best competitors?
We asked nine professional athletes about what type of athletes they admire — not specific athletes, per se, but the sports that impress them most. Their answers ranged from golfers to tennis players to swimmers to gymnasts to jockeys.
Check out their answers below.
Some answers have been lightly edited for length and clarity.