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

Middle infielders

Eric Young Jr., 2B/OF, Colorado Rockies

If you don't know, now you Kuo

The Rockies have welcomed back EY Jr., and they'll give him a long look at leadoff, reportedly. The switch hitter is batting a measly .244 at-bats this year, but he has five stolen bases in six attempts. He offers high upside in that category if you need it, and he's likely at a position that's hard to fill. At the top of Colorado's lineup? Give it a shot.

Shallow mixed: Watch

Deep mixed: Consider

NL-only: Acquire

Pitchers

Hong-Chih Kuo, RP, Los Angeles Dodgers

Didn't get the memo? The Dodgers demoted Jonathan Broxton. It's a temporary move - reportedly - but two factors make Kuo a dreamier pickup than most have realized:

1) Torre told Broxton that the right-hander would be sharing closing duties with Kuo before Broxton was blown up on Thursday night.

2) Kuo's performance this year (0.88 ERA, 11.20 K/9, 2.85 BB/9) makes him a major commodity no matter what. Saves? Bonus!

Shallow mixed: Consider

Deep mixed: Acquire

NL-only: Acquire

Jhoulys Chacin, SP, Colorado Rockies

Colorado needs Chacin to fill in for Jeff Francis (shoulder) for at least a couple of starts. We all know how that could go.

Chacin's K/9 has played well in the bigs (9.73). It should, given his heat. He's working on taming the free pass issuance. He was champing at the bit for a chance to show what he can do up here again. The Rockies sent him down to stretch him out just in case such a situation arose.

In his last two starts for Triple-A Colorado Springs, Chacin pitched a combined 11 2/3 frames, allowing seven hits, five runs (but only one earned) and two talks. He struck out 11. He's ready to go and has serious upside. He will still come with bumps and bruises, likely, but take a risk.

Shallow mixed: Watch

Deep mixed: Consider

NL-only: Acquire

Casey Coleman, P, Chicago Cubs

The Cubs are moving Coleman, one of their better pitching prospects, into the rotation. They have seen enough of Thomas Diamond, for now.

Coleman, a righty, is uncertain to fare any better. In 117 1/3 frames (20 starts) with Triple-A Iowa, he posted a 4.07 ERA and struck out 59 against 35. In his four relief appearances (8 1/3 innings), he has yielded eight earned runs, walking five and fanning five.

Perhaps he'll be comfortable by throwing the first pitch, but don't risk much yet to find out.

Shallow mixed: Pass

Deep mixed: Pass

NL-only: Watch