SS/2B/3B Angel Aguilar .229/.283/.330, 3 HR, 26 RBI, 14 SB, 102/22 K/BB, 376 PA
After an incredible 2014 season in the GCL, Aguilar struggled in Low-A where he had to share playing time with Jorge Mateo. He's still only 20, so maybe he just needs another go-around without having to learn new positions to accommodate better prospects.
OF Austin Aune .246/.286/.422, 8 HR, 49 RBI, 167(!)/22 K/BB, 444 PA
The former second round pick finally had a season worthy of professional baseball, but it likely comes too little to late for it to mean much for him. He managed to find his power stroke, but his strikeout rates are alarmingly high.
OF Devyn Bolasky .236/.349/.304, 18 RBI, 11 SB, 35/36 K/BB, 288 PA
So far Bolasky hasn't shown much ability with the bat, but he does has speed on the base paths and a great eye at the plate. He's going to have to hit more consistently if he's not going to develop any power.
SS/2B/3B Vicente Conde .265/.351/.414, 6 HR, 32 RBI, 9 SB, 74/41 K/BB, 369 PA
Valued for his ability to play shortstop, Conde was used at every level of the system in what was only his second professional season. Despite being jostled around, Conde performed well at Low-A Charleston and could be a utility infielder to watch next year.
1B/2B/3B Billy Fleming .330/.383/.361, 9 RBI, 3 SB, 18/9 K/BB, 107 PA
A jack-of-all-trades, Fleming played first, second, and third across four levels this year and still managed to put together a strong offensive season. The former non-drafted free agent is really just a singles hitter and might just max out as a utility player in the upper minors.
OF Dustin Fowler .307/.340/.419, 4 HR, 31 RBI, 18 SB, 47/11 K/BB, 256 PA
After two years in relative obscurity, Fowler jumped out and became a name to watch, earning a spot among the Yankees top 30 prospects. After moving up to Tampa this year, it might not be long before he's considered an MLB option.
SS Jorge Mateo .268/.338/.378, 33 RBI, 71 SB, 80/36 K/BB, 409 PA
We're all familiar with Mateo's impressive 2015 season where he earned playing time at High-A Tampa at the age of 20. What he needs to work on now is cutting down on the 30 total errors he made at short this year.
C Collin Slaybaugh .289/.333/.322, 11 RBI, 12 SB, 29/11 K/BB, 193 PA
The Yankees used Slaybaugh strictly as an outfielder last year, making it look like he wouldn't get a chance behind the plate as a professional. In 2015, they used him exclusively as a catcher, but don't rule out an eventual permanent position change just yet.
1B Connor Spencer .290/.385/.343, 23 RBI, 31/22 K/BB, 206 PA
After last year's effort, Spencer took a clear step back, though he showed a good eye at the plate. It won't matter much, though, if he can't find some home run power as a first baseman.
1B Bo Thompson .253/.387/.348, 3 HR, 24 RBI, 30/45 K/BB, 289 PA
Thompson showed an incredible eye at the plate this year, and though he didn't hit for a ton of power, he had a solid rebound in the year following his PED suspension.
RHP Rony Bautista 4.15 ERA, 10.3 K/9, 6.5 BB/9, 86.2 IP, 28 G/12 GS
The six-foot-seven reliever is a strikeout machine, but also struggles with command, so it's no wonder trying him out as a starter didn't really work out. His 2.23 ERA as a reliever might help him move up a level in 2016 for his age-24 season.
RHP Sean Carley 3.86 ERA, 7.3 K/9, 2.6 BB/9, 49.0 IP
Carley had a tale of two seasons; through May he had a 6.45 ERA before being demoted to Staten Island. He returned to Charleston in July and had a 1.69 ERA for the rest of the season.
RHP Luis Cedeno 3.52 ERA, 5.5 K/9, 4.5 BB/9, 46.0 IP, 9 GS
After an impressive showing at Staten Island, Cedeno continued to perform well in the Charleston rotation at the age of 20. The Venezuelan right-hander could become an interesting name before too long.
RHP Jordan Foley 2.88 ERA, 9.9 K/9, 3.8 BB/9, 84.1 IP, 17 GS
The 22-year-old righty did so well this season that he was actually trusted to make a couple of appearances at the Triple-A level this year. As one of the many college arms the Yankees have taken in recent years, he might be part of the discussion as soon as next year.
LHP Caleb Frare 2.35 ERA, 9.6 K/9, 2.9 BB/9, 46.0 IP
After missing the last two seasons, Frare had a great return to the mound and even earned himself a promotion to High-A Tampa. He's still only going to be 22 next year, so he has plenty of time to regain his footing and show what he can do.
LHP Justin Kamplain 4.29 ERA, 7.9 K/9, 2.5 BB/9, 136.1 IP, 25 GS
In his first full professional season, Kamplain put in a major league-level of work. If the results fall more in line with his stamina then the Yankees could really have something here.
RHP Joseph Maher 2.20 ERA, 7.4 K/9, 2.2 BB/9, 118.2 IP, 27 G/18 GS
A complete unknown heading into the season and having missed almost all of the 2014 season, Maher did a lot to put himself on the map this year. If he proves he can stick in the rotation, he might become someone to talk about before long.
RHP Matt Marsh 2.28 ERA, 7.9 K/9, 3.8 BB/9, 59.1 IP, 14 G/8 GS
The former non-drafted free agent, started out in High-A Tampa, but soon found his way into the Charleston bullpen. He performed well as a starter and reliever, but he needs to move quickly next year since he's already 24.
RHP Dillion McNamara 3.23 ERA, 7.0 K/9, 2.8 BB/9, 61.1 IP
Used as a short reliever this year, McNamara was able to up his strikeout rates and look like a viable relief pitcher in the upper minors. He's shown the ability to pitch multiple innings, so he could eventually slot into a long reliever-type role if he's ever given the chance to start in the minors.
Phil Walby 3.13 ERA, 8.5 K/9, 4.8 BB/9, 31.2 IP
Walby rebounded after a poor 2014 season. He still has a very bad command problem, but it was at least less bad in 2015. Hopefully he can continue to improve.
RHP Matt Wotherspoon 3.84 ERA, 10.4 K/9, 2.1 BB/9, 84.1 IP, 16 G/15 GS
The right-hander had a promising season as a starter for Low-A Charleston, going on to make brief appearances for Tampa and Trenton. His future is likely in the bullpen, but the experience will be useful next year.