Fantasy baseball waivers and the acquisition of fantasy baseball free agents can make or break your season. Your fantasy baseball cheat sheets won't help you after spring training. If your team remains the same after opening day, you will have trouble competing in your rotisserie baseball league.

Do you need to replace your fantasy baseball busts? Which fantasy baseball players can you ignore? KFFL.com's Fantasy Baseball Diamond Market gives you fantasy baseball tips and insight to sort through the masses quickly.

Key

Outfielders

Conor Jackson, OF, Oakland Athletics

More OF filler

The A's activated Co-Jack (hamstring) last night and threw him into the lineup in left. He belted a solo homer for his club's only hit of the contest last night against the Toronto Blue Jays.

Jackson is hitting .245 with, now, two ding dongs and 25 runs scored in 200 at-bats. It has been another trying season for the former member of the Arizona Diamondbacks who missed most of 2009 with Valley Fever.

Jackson has trouble staying healthy, it seems, so he's not dependable. He'll play often, but not every day, and Oakland is likely to recall Chris Carter in September. Still, signs are positive for a considerable improvement in his batting average. How much will that help you, is the question.

Shallow mixed: Pass

Deep mixed: Pass

AL-only: Acquire