Kepler was called up in June and took over the everyday right field role, displaying a surge in power (17 home runs, including a three-homer game) that he hadn't shown in the minors. His growth in power shouldn't be unexpected since he was just 23 years old and may have a delayed development cycle since he started playing baseball late in his native Germany. Kepler draws walks at a good clip, made strong contact in the minors and has some speed on the basepaths. He has some areas to improve as he struggled against left-handed pitching (.595 OPS), had more strikeouts initially in the majors than his minor league track record would suggest and wore down in the final month (.538 OPS in September). He also struggled at times in right field despite good reviews of his defense in the minors. However, he should be set as an everyday outfielder for the Twins and could improve rapidly in his first full season in the majors.

Kepler had a breakout season last year at Double-A and could be in position to win a starting outfield role with the Twins as early as this spring. After failing to make an impression the previous two seasons, he finally put it all together at age 22 by hitting .322/.416/.531 with 18 stolen bases at Double-A. Kepler may have a later development cycle since he started playing baseball late in his native Germany. His growth was on display across the board as he draws walks at a good clip, makes strong contact, and developed increasing power (13 triples). Kepler is seen as a solid defensive outfielder at all three positions and has even played first base. The Twins could opt to send him down to Triple-A to begin the season, but he should see a significant amount of time in Minnesota in 2016.

Kepler had another lackluster season in the minors and even though he may develop later than other players after being signed out of Germany, he'll need to show something in 2015 to remain a top prospect in the Minnesota system. There were some signs of hope as he hit much better the final two months at High-A (.303 batting average) and had a strong Arizona Fall League campaign by hitting .307/.366/.440. He's shown a good eye at the plate as he draws walks, makes contact and scouts believe he'll add power, but he'll need to finally put it all together at Double-A to be in Minnesota's long-term plans.

A strained left elbow cost Kepler the first two and a half months of the 2013 season, and he went on to hit just .237/.312/.424 in 61 games at Low-A Cedar Rapids. He then wasn't impressive in the Arizona Fall League, where he hit .234/.306/.313. Still, it's too early to write him off as he has shown good place discipline (drawing walks in 9.1 percent of place appearances last season) and since he may develop later than other players after being signed out of Germany. He'll need to improve in 2014 and show he can stay healthy to maintain his top prospect status.

Kepler was an extremely athletic but very raw player when signed out of Germany in 2009. He started to add baseball skills to his athleticism last year as he hit .297/.387/.539 in rookie ball. He drew walks at a good rate (10 percent of plate appearances) and made great contact (33:27 BB:K). A strong year in his first full season league in 2013 could push him near the top of Minnesota's hitting prospects.