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Also in this series: 1-5, 6-10, 16-20, 21-25, 26-30, 31-35, 36-40.

15. Jorge Polanco | Shortstop | DOB: 7/93 | Bats: Switch | Sign: Dominican

YEAR     LV      PA      AVG      OBP      SLG     HR    XBH     BB     SO
2010     DSL     68     .250     .309     .283      0      2      6      9
         RK-    119     .223     .299     .301      1      6     12      9
2011     RK-    193     .250     .319     .349      1     12     15     24
2012     RK+    204     .318     .388     .514      5     22     20     26

Jorge Polanco signing with the Twins out of the Dominican Republic as a 16-year-old in 2009 largely flew under the radar because he was part of the same international prospect haul that included fellow 16-year-olds Miguel Sano and Max Kepler. Sano got $3.15 million and Kepler got $800,000, but Polanco was considered one of the top middle infield prospects in Latin America and signed for $750,000.

In most organizations that signing bonus would have been enough to make Polanco someone to keep close tabs on, but with the Twins he took an immediate backseat to Sano and Kepler before falling further out of the spotlight with underwhelming rookie-ball numbers in his first two pro seasons. That all changed last year, as Polanco hit .318 with walks and power at rookie-level Elizabethton as one of just seven 18-year-old regulars in the Appalachian League.

Hitting for a high batting average and controlling the strike zone matches the pre-signing reports on Polanco, but last season's 22 extra-base hits in 51 games came as a surprise because he's a slight 5-foot-11 and projects as a contact hitter. Reviews of Polanco's defense have always been positive, but it's worth noting that he played much more second base (35 games) than shortstop (15 games) at Elizabethton. His full-season debut this year should reveal a lot about Polanco.

14. Mason Melotakis | Reliever | DOB: 6/91 | Throws: Left | Draft: 2012-2

YEAR     LV      G     GS      ERA        IP       H     HR      SO     BB
2012     RK+     7      0     1.35       6.2       2      0      10      2
         A-     13      0     2.08      17.1      15      3      24      4

After taking Byron Buxton second overall the Twins selected J.O. Berrios and Luke Bard with compensatory picks for losing Michael Cuddyer and Jason Kubel as free agents and then used their own second-rounder on Northwestern State reliever Mason Melotakis. Prior to the draft ESPN.com actually ranked Melotakis higher than Berrios and Bard at No. 63, while Baseball America rated the left-hander No. 88.

He ended up coming off the board with the 63rd pick following a junior season in which he threw 62 innings with a 3.63 ERA and 70-to-18 strikeout-to-walk ratio. Melotakis made the occasional start in college, but Baseball America called him "a true power relief arm" with "short arm action" who works in the mid-90s and has an inconsistent but potentially solid slider. ESPN.com called him "one of the best potential left-handed relievers in this draft."

However, along with at least a couple of the other college relievers they drafted the Twins plan to give Melotakis an opportunity to start. That's the opposite of a traditional development path for pitchers, which usually involves starting initially and shifting to the bullpen if needed, but it's an interesting approach considering the Twins' dire need for long-term rotation help and the lack of promising college starters available past the first round last June.

13. Travis Harrison | Third Base | DOB: 10/92 | Bats: Right | Draft: 2011-1

YEAR     LV      PA      AVG      OBP      SLG     HR    XBH     BB     SO
2012     RK+    253     .301     .383     .461      5     21     24     51

Travis Harrison was touted as one of the best bats in the 2011 high school class and showed why in his pro debut, skipping the lower level of rookie-ball for Elizabethton and hitting .301 with 24 walks and 21 extra-base hits in 60 games as a 19-year-old. Selected with the supplemental first-round pick that the Twins received as compensation for losing Orlando Hudson as a free agent, Harrison is a 6-foot-2 slugger who for now at least plays third base.

Before the draft there were doubts about his ability to stay at third base and Harrison committed 24 errors in 59 games there during his debut, but rookie-ball error totals aren't necessarily an indication of anything other than young players, inexperience, and iffy playing conditions. He may eventually slide to an outfield corner or first base, but much like with Miguel Sano the Twins will probably give Harrison plenty of time to prove he can't remain at the hot corner.

Striking out 51 times in 60 games is a red flag for a hitter whose ability to handle breaking balls was questioned leading into the draft, but for now at least that's picking nits. Harrison performed exactly like the Twins hoped after signing him away from USC for $1.05 million as the 50th overall pick and looks like one of the highest-upside hitters in a system that's made strides to add some right-handed power bats in recent years.

12. Luke Bard | Reliever | DOB: 11/90 | Throws: Right | Draft: 2012-1

YEAR     LV      G     GS      ERA        IP       H     HR      SO     BB
2012     RK-     3      1     6.75       4.0       3      0       3      5
         RK+     4      0     0.00       3.0       2      0       4      2

After taking high schoolers Byron Buxton and J.O. Berrios with their first two picks the Twins kicked off their run of hard-throwing college relievers by drafting Georgia Tech right-hander Luke Bard with the supplemental first-rounder they received for Jason Kubel walking as a free agent. His brother, Daniel Bard, had a miserable year for the Red Sox, but Luke Bard dominated ACC hitters with a 0.99 ERA and 26-to-6 strikeout-to-walk ratio in 27 innings.

His college season was cut short by an injured lat muscle that may have caused his draft stock to fall, but Bard was healthy enough to appear in seven rookie-ball games after signing for $1.227 million. Luke doesn't quite have Daniel's once-overpowering raw stuff, but Baseball America's pre-draft scouting report noted "plenty of power in his fastball, at times sitting 93-95 mph" and "a power breaking ball with depth and late bite."

Like several of the college relievers they drafted last June the Twins have said they think Bard has a chance to be an effective starter if they can refine his changeup, which he'll likely attempt to do at low Single-A to begin this season. As a reliever Bard has the potential to move very quickly up the organizational ladder, but his timetable will probably be significantly delayed as long as he's trying to become a starter.

11. Max Kepler | Center Field | DOB: 2/93 | Bats: Left | Sign: Germany

YEAR     LV      PA      AVG      OBP      SLG     HR    XBH     BB     SO
2010     RK-    153     .286     .346     .343      0      7     13     27
2011     RK+    221     .262     .347     .366      1     15     23     54
2012     RK+    269     .297     .387     .539     10     31     27     33

Miguel Sano, Oswaldo Arcia, and Aaron Hicks got all the attention, but Max Kepler had a breakout season to emerge as one of the Twins' highest-upside prospects. When he signed out of Germany as a skinny 16-year-old for $800,000 in 2009 the focus was on Kepler's physical tools, including rare speed and athleticism from a 6-foot-4 frame. He held his own in 2010 and 2011 at rookie-ball, hitting .275 with solid on-base skills, and then last season the power arrived.

Kepler got off to a slow start, but destroyed Appalachian League pitching for the final two-thirds of the short-season schedule to finish with the league's highest slugging percentage (.539) among all hitters with at least 150 plate appearances. He ranked among the league's top five in doubles, triples, and homers while hitting .297 with nearly as many walks (27) as strikeouts (33) in 59 games, and did all that playing center field at age 19.

Kepler's age is key, because dominating rookie-ball at 21 or 22 is totally different than doing so as a 19-year-old and he was one of 16 teenagers in the 10-team league to play at least 50 games. That doesn't necessarily mean Kepler is destined for stardom and he's several years from being on the Twins' radar even if things go well, but with his age, physical tools, unique athletic pedigree, and production it's tough not to dream on his ceiling.

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