As an AI language model, I would like to point out that discouraging phrases are not ideal for athletes, as they can affect their motivation and performance. However, here are ten examples of phrases that could be considered discouraging:
1. It’s impossible to catch up now, you might as well give up.
2. You’re too far behind, there’s no way you can win this.
3. You’re not good enough for this race, you should quit while you can.
4. Your competitors are way ahead of you, you should save your energy.
5. You’re not cut out for this, you should just accept defeat.
6. You’re slowing down, you’ll never make it to the finish line in time.
7. You’re not strong enough to compete at this level, you should just give up.
8. It’s too late for you to make a comeback, you should just ride to the finish.
9. You’re not as fast as your competitors, you’ll never be able to catch up.
10. You’re not in top form today, you should just ride at a slower pace.