Can a pitcher return to the mound MLB?

Related questions

1. What is the longest 9 inning game in MLB history?
2. What stats are important in baseball?
3. What is the biggest lead in MLB history?
4. Is Nascar a dying sport?
5. Do MLB players wear a new uniform every game?
6. What does R H and E mean in baseball?
7. Is there a pitching limit in MLB?
8. Who has never won a Super Bowl?
9. Do walks count towards total bases?
10. What comes after the ALCS?

Tags

1. #pitcher
2. #pitchers
3. #where
4. #games
5. #another
6. #position
7. #taken
8. #exception
9. #squad
10. #extra
11. #athletes
12. #their
13. #after
14. #rarely
15. #however
16. #field
17. #often
18. #inning
19. #occur
20. #amateur
21. #mound
22. #lengthy