Chris Volstad, FLA (22) - Volstad came up in the middle of the summer for the Marlins last year and produce fairly well for them. I like to see him take one step forward in first full season this year as a top 3 starter for the Marlins.
2008 stats: 84.1 IP 6-4 W-L 2.88 ERA 52 K's
Justin Upton, ARI (21) - This will be Upton's second full season in the majors. He was able to win the starting RF position last spring training after being drafted as a SS. He is often compared as the next Ken Griffey with a very high ceiling.
2008 stats : .250 BA 15 HR 42 RBI .353 OBP
Clayton Kershaw, LAD (20) - I am very high on this guy, don't be surprised if Kershaw has a great year this year for the Dodgers. This will be Kershaw's first full season in the majors and I really like his potential with playoff appearances under his belt already. Watch out for this guy's circle change.
2008 stats: 107.7 IP 5-5 W-L 4.26 ERA 100 K's
Jay Bruce, CIN (21) - This guy was a stud the minute he reached the majors last year. In this first full week he posted .577 BA 3 HR 3 Doubles, the 3 homers were in concecutive games too. I can't wait to see what this guy does in first full season this year.
2008 stats: .254 BA 21 HR 52 RBI .314 OBP
Jair Jurrjens, ATL (23) - This guy was traded to the Braves before last season for Edger Renteria and really stepped up. With John Smoltz out most of last season Jurrjens really help the Braves to not be a total embarassment. With a full season under his belt look at him to continue to improve behind Derek Lowe and Javier Vazquez.
2008 stats: 188.3 IP 13-10 W-L 3.68 ERA 139 K's
Yovani Gallardo, MIL (22) - Now that he is finally healthy watch out for Gallardo to tear it up this season. I mean he's going to have to being labeled as the Brewers ace with Sabathia and Sheets gone. I can see him rise to the occasion though with his stuff. He has one game of playoff experience which good end up helping him develop.
2008 stats: 24.0 IP 0-0 W-L 1.88 ERA 20 K's
Felix Hernandez, SEA (22) - Hernandez is probably the most experienced player on this list being only 22 there is still so much potential. This will be, believe it or not, Hernandez's 4th full season and he's still only 22! He could throw 94 MPH at the age of 14. 14?! I like to see him really take a step forward this season and finally breakout unless another injury derails him again.
2008 stats: 200.7 IP 9-11 W-L 3.45 ERA 175 K's
John Danks, CHW (23) - After a disappointing call up in 2007 and struggling down the stretch, Danks was able to be a very liable starter for the AL Central Champs last season. He also played well in his lone playoff start last season. As long Danks plays like last season consider it a good year.
2008 stats: 195.0 IP 12-9 W-L 3.32 ERA 159 K's
Daniel Murphy, NYM (23) - This will be Murphy's second season for the Mets after just barely having a rookie year last year (min. 130 AB, Murphy had 131). I really like his potential as the new LF for the Mets. He is a very good defender with a great arm, but he can also hit well for average and very fast around the bases.
2008 stats: .313 BA 2 HR 17 RBI .397 OBP
Joba Chamberlain, NYY (23) - After starting the season last year in relief watch Joba to really impress the league as a starter for a full season. He is always a risk for an injury but we'll see how the Yankees use him this year with how potent their offense is.
2008 stats: 100.3 IP 4-3 W-L 2.60 ERA 118 K's
Chris Davis, TEX (22) - After being called up mid-summer last season watch for his guy's power in the upcoming season. I wouldn't be surprised to see him among the leaders in homers. He showed this power in his first two games in the majors and he didn't slow down. I like 35-40 homers minimum out of Davis this year.
2008 stats: .285 BA 17 HR 55 RBI .331 OBP
Elvis Andrus, TEX (20) - Andrus came to the Rangers as a part of the Teixiera trade. This guy has a sky of potential. He is suppose to be so good that the Rangers had to ask All-Star Michael Young to move to 3B. Only being 20 don't expect an immediate impact this year.
2008 stats: N/A
David Price, TB (23) - This is the most ancipated rookie for the 2009 season. After an impressive postseason for the Rays in relief, watch Price as they move him to starter this season. He possesses a mean fastball which peaks at 97 MPH with a nasty slider and decent change to compliment it. I can see Price maturing very quickly and making an impact immediately.
2008 stats: 14.0 IP 0-0 W-L 1.93 ERA 12 K's
Ian Stewart, COL (23) - Stewart is the only non-starter on this list but don't be surpised if he takes over somewhere in the infield for the Rockies by the end of the season. He would be the starter if not for Helton being at 1B. Last season he replaced Atkins at third when he moved to first for Helton. Stewart has good power potential and he immediately showed that by hitting a Grand Slam in one of this first games.
2008 stats: .259 BA 10 HR 41 RBI .349 OPB
Carlos Gomez, MIN (23) - Gomez was brought to the Twins as a part of the deal that send Santana to the Mets and he made an immediate impact. He won the starting job at center last season after Torii Hunter left and batted leadoff very successfully. His 40 time is clocked at 4.29 and having 33 SB last season don't be surprised if that number jumps up to the high 40's or 50's if he can improve his OBP.
2008 stats: .258 BA 7 HR 59 RBI .296 OBP