Lot of people are saying Beltran... I'm going to go with Beltre. I kept him thinking the worst he can do is 30-100-.280ish after his monster season.
NEVER, EVER pick a player who busts out for one great season after a string of mediocre, disappointing seasons. There are too many safer, good, talented players with longer track records available to choose from.
"Think of how stupid the average person is, and realize half of them are stupider than that." ~George Carlin