When looking for sleepers in fantasy baseball, there is a certain type of player I usually search for. I have found that some of the best successful sleeper picks turn out to be either established players coming off of down years (think Marcus Semien) or young, under-the-radar guys who have shown improvement and have the opportunity to play and keep improving.This is where Adbert Alzolay fits in. The Cubs' #1 prospect in 2018 has had his ups and downs since his debut in 2019, but he has the ...