There are 13 players born in 1990 who make it on my top 80 Twins prospects list.
72. Taylor Rogers, LHS, DOB: 12/17/90
2013 A-/A+ (A+ stats): 130.2, 2.55, 83/32 (7.4/2.3)
2013 was an impressive season for the lefty. His K rate fell dramatically but he really kept the ball in the ballpark, giving up only five homers in A+. It was a solid step forward for Rogers and some more time in Fort Myers could help him develop further.
52. Jason Wheeler, LHS, DOB: 10/27/90
2013 A+: 143.1, 3.70, 91/58 (6.2/3.0)
Wheeler walked more and struck out fewer in fewer innings at Fort Myers than his 2012 effort in Beloit. He has logged 300 innings in the past two seasons with a 3.57 ERA. I imagine he is heading back to Fort Myers to improve his K/BB rate in 2014.
45. Luke Bard, RHR, DOB: 11/13/90
2013 GCL/ELZ/A+ (combined stats): 12.1, 3.65, 9/9 (7.4/7.4)
Bard has been a disappointing injury case. Now, in 19.1 career innings, he has 16 strikeouts and 16 walks. He remains an interesting prospect but needs to remain healthy in 2014 or his stock will drop even more dramatically.
43. Corey Williams, LHR, DOB: 7/4/90
2013 A+/AA (A+ stats): 45.1, 5.16, 43/23 (9.3/4.7)
Williams has stagnated on this list due to a subpar performance in 2013, though I am confident that he can make headway, even by being promoted to the AA bullpen at the beginning of 2014. The lefty had big trouble with the long ball this year, and when a pitcher also walks to many, it is a recipe for disaster. 2014 is an important year for Williams.
36. Daniel Ortiz, OF, LH, DOB: 1/5/90
2013 AA: 521, .258/.301/.405 (.706) (.725), 27-4-12, 27-88, 1-4
Ortiz has a tendency to start seasons very well and then get progressively worse as the season goes on. A great April was followed by consistent decline every month, with a bad August to wrap up the season. Ortiz is very much like Santana, but with some more pop, less contact, and a lot less speed. He might be served best by starting out in New Britain again for 2014 and then work to earn a promotion to Rochester. It is hard, at this point, to imagine Ortiz as anything but a fourth OF, but it will be interesting to watch his power numbers going forward.
28. JD Williams, SH, LF/CF DOB: 11/20/90
2013 A-/A+ (combined stats): 486, .265/.372/.403 (.775) (.729), 17-6-9, 66-105, 26-13
Williams was looking to bounce back from a disappointing 2012 and he really did so in Cedar Rapids, posting an .852 OPS. His numbers fell after his promotion to Fort Myers 2/3 of the way through the season. There is still quite a bit of promise and Williams is perhaps only second to Buxton in speed in the organization. Much of the drop at A+ came in slugging, so we will see if Williams can get that pop back and force a promotion about 2/3 of the way through 2014.
24. Tyler Duffey, RHS, DOB: 12/27/90
2013 A-/A+ (combined stats): 121, 3.64, 91/23 (7.6/1.6)
Duffey was dominant for Cedar Rapids in the first half of the year. He went through a rough patch in Fort Myers, but that was to be expected. They moved him between the rotation and bullpen, but he still ended with a solid number of innings. He will start next season back in A+.
22. DJ Baxendale, RHS, DOB: 12/8/90
2013 A+/AA (combined stats): 150, 3.90, 112/33 (7.6/1.9)
Baxendale was great for Fort Myers at the beginning of the season and a lot of people got very excited about his potential. This was tempered somewhat by his struggles at AA. He has good enough stuff to get his strikeout rate back to around his career level. Look for Baxendale to return to AA and perhaps push his way forward for a serious look in the AFL after next season.
20. Zach Jones, RHR, DOB: 12/4/90
2013 A+: 48.2, 1.85, 70/28 (13.6/5.1)
Jones is off to the AFL after a dominant performance out of the bullpen for Fort Myers. The strikeouts are huge. The walks are also huge, but that comes with the territory sometimes. Jones doesn't give up many hits so his WHIP remains low. Should be the closer for New Britain next year.
19. Dalton Hicks, 1B, LH, DOB: 4/2/90
2013 A-/A+ (combined stats): 576, .289/.358/.468 (.826) (.824), 39-0-17, 56-123, 0-2
Hicks earned a promotion well into 2013 and did fairly well after the move. His 56 extra base hits are impressive and he can work on improving his BB/K rate with a return trip to Fort Myers to start 2014. I would expect Hicks to earn a promotion for the second year in a row at some point during the season. He is a solid all-around prospect who could soon make us forget Chris Parmelee.
17. Kennys Vargas, 1B, SH, DOB: 8/2/90
2013 A+: 520, .267/.344/.468 (.813) (.861), 33-1-19, 50-105, 0-0
Vargas felt the effects of fatigue in his first season with more than 191 plate appearances. The power is there but dropped off considerably in the second half of the season. This is really not something to be too concerned about. Miguel Sano and Eddie Rosario also left him for New Britain, so he lost some help in the lineup. He just turned 23, so the majority of his age-24 season will be in AA. 2014 might be telling for Vargas' future in the organization.
16. Danny Santana, SS/2B, SH, DOB: 11/7/90
2013 AA: 587 plate appearances, .297/.333/.386 (.719) (.712 career), 22 doubles, 10 triples, 2 homers, 24 walks, 94 strikeouts, 30 stolen bases, 13 times caught stealing
Santana is still mistake-prone at shortstop but the Twins seem set on keeping him there. He went through some natural growing pains in 2013, but had quite similar numbers to his 2012 season in Fort Myers. The power is not there, but the stolen base total is climbing. Santana should begin 2014 with Rosario and Beresford in the Rochester middle infield.
3. Alex Meyer, RHS, DOB: 1/3/90
2013 GLC/AA (AA statistics): 70.0 innings pitched, 3.21 ERA, 10.8 K/9, 3.7 BB/9 (10.4/3.3 career)
Meyer gave everyone a scare with an arm injury this year, but things are back on track and he is heading to the AFL to get some innings. Hopefully this will put him on a course for 150 or so innings next year. Meyer appears to be the real deal and it is exciting to see him now on the cusp of competing for a Twins rotation spot. Hopefully the Twins do not repeat the Kyle Gibson experience by not limiting Meyer's AAA innings early in the season. There is no reason that if Meyer dominates AAA that he shouldn't be called up to the Twins for 100 innings or so.
There is the 1990 group. Careful observers will note the fact that J.T. Chargois is not listed. This isn't a mistake. He has thrown 16 professional innings and will be basically 24.5 years old by the time he even gets going again in the 2015 season. I am going to keep him off my list until he comes back.