Here is minorleaguebaseball.com's Detroit Top 20 prospects, I bolded the guys we should be targeting:
1) Casey Crosby, LHP, Grade B+: Has some of the best southpaw stuff in the minors and seems fully recovered from Tommy John. Further command refinements in 2010 would move him into the A- and maybe a pure A category.
2) Jacob Turner, RHP, Grade B+: Outstanding high school pitcher, but I want to see some pro numbers before giving him a higher grade. Even a B+ is aggressive in my grading scheme, but I like him a lot. Like Crosby, he has A-/A potential if all goes well.
3) Austin Jackson, OF, Grade B: I like him more than the numbers say I should.
4)
Alex Avila, C, Grade B: Won't slug .590 in a full season, but I expect him to have a long and solid career. I was thinking B+ earlier but am backing off that now. . .a B is still a strong grade remember.
5) Dan Schlereth, LHP, Grade B: Excellent relief prospect, needs to sharpen command but was rushed by Arizona.
6)
Scott Sizemore, 2B, Grade B: Like Avila, I don't think he's going to be a star, but he should be a solid regular, will be a Rookie of the Year candidate assuming he's healthy in spring training.
7)
Ryan Strieby, 1B-OF, Grade B-: Love the power bat, but I don't think he'll repeat the .303 average and .427 OBP. Can he really handle left field?
8) Andy Oliver, LHP, Grade B-: We need to see some professional data aside from the Arizona Fall League, but he seems like the kind of pitcher who could be more effective in the pros than in college. Big upside arm.
9)
Casper Wells, OF, Grade C+: Scouts are starting to warm to him. He's produced in Double-A and in the Arizona Fall League, but there will always be skeptics until he hits in the Show. Personally I like the guy.
10)
Wilkin Ramirez, OF, Grade C+: Hard to grade...excellent tools are still here, but performance remains spotty with no clear indication that will change.
11) Daniel Fields, SS, Grade C+: Excellent tools with local Detroit ties, but how raw is he and where does he fit with the glove? Need pro data before ranking higher.
12)
Cody Satterwhite, RHP, Grade C+: Part of large collection of potential bullpen arms that could be ready soon.
13) Robbie Weinhardt, RHP, Grade C+: Another relief arm who could help quickly.
14) Brayan Villareal, RHP, Grade C+: Sleeper prospect, could rank as high as 10
th depending on what you want to emphasize. Need some higher level data but he was great at West Michigan.
15)
Alfredo Figaro, RHP, Grade C: Looks more like a reliever to me than a starter. They have a lot of good material for a pen here.
16) Luis Marte, RHP, Grade C: Not as effective in Double-A as some expected, but live arm will get him plenty of chances.
17) Gustavo Nunez, SS, Grade C: hit .315 with 45 steals in the Midwest League, but the scouting reports I have emphasize his rawness.
18) Melvin Mercedes, RHP, Grade C: Another hard-throwing relief arm, but needs to show he can throw strikes.
19) Ramon Lebron, RHP, Grade C: Another high-ceiling arm from rookie ball with command issues.
20)
Cale Iorg, SS, Grade C: Frankly I think this is generous. I don't think he'll ever hit enough to be a regular, but the glove and major league bloodlines will get him to the majors.