MLB spring training is the time of year where you get to see three things. First, you see up-and-coming prospects playing alongside guys in their prime. Second, you see old players giving it one last shot alongside guys in their prime.
The third, and perhaps best thing, is the position battles, as well as battles for a spot on the roster. Given that the 40-man roster and non-roster invitees can amount to many players, it's tough to get noticed, and some players become extreme long shots to make the team.
Here is the longest shot from every team's 40-man roster. I did not add in non-roster invitees, so Jamie Moyer above does not get to represent Colorado. Besides, Moyer's pitching quite well in spring training anyway.