Perfect example would be Bernie Williams. There were very low expectations before the season and he fell very low in most drafts. Now say someone gets hot the first week so you drop Bernie. Then you find out a month later that Bernie is healthy and back to his old self and the flash in the pan you just picked up is just that, a flash in the pan. My strategy is to pick people with huge upsides in the last few rounds such as, Bernie, S. Stewart, Griffey, Burrell etc. and then if any of them are still hot after a month you can get mid to top round value for them in trade. If they don't look like they are gonna break out then drop them for who ever is hot. Just my 2 cents.