RotoWire Partners
Fantasy Baseball

2015 Fantasy Baseball Sleepers

A list of undervalued players to target for the 2015 MLB season.

MLB Fantasy Tools:
Rankings      Cheat Sheet      Auction Values      Projections      Draft Software      Sleepers      More Fantasy Baseball
Fantasy Baseball Sleepers For 2015
There's nothing better than taking a chance on a value pick during your draft and watching it pay off.

To aid you in your quest for the elusive fantasy baseball sleeper, we've put together a list of potential breakout or bounce-back players to help you win this season.

This list is in alphabetical order and the degree to which these players qualify as sleepers obviously depends on your specific league.

Chris Archer

Tampa Bay Rays  Pitcher

Year G GS CG SH IP H ER HR BB K W L SV ERA WHIP
2015 Proj. 31 31 1 0 193 168 69 14 68 174 13 9 0 3.22 1.22
Archer showed some growth from year one to year two. His strikeout rate went up and he showed more confidence in his changeup, but he’s not a finished product. His walk rate rose nearly two percentage points from 2013, but he was able to control some of that damage by doing a better job of keeping the ball in the yard. He went at least seven innings in just nine of his 32 outings as pitch efficiency can be a problem for him as someone who works with fastballs and sliders nearly 95% of the time. The strikeouts and the ratios are good, but one area where he needs to improve is controlling the running game as runners are 31 of 40 in stealing bases when he is on the mound. He has the ceiling to be a No. 2 starter, but he performs more like a No. 3 starter these days.

Brad Boxberger

Tampa Bay Rays  Pitcher

Year G GS CG SH IP H ER HR BB K W L SV ERA WHIP
2015 Proj. 66 0 0 0 73 50 22 7 28 98 3 3 22 2.71 1.07
The Rays liked Boxberger when they got him from San Diego, but nobody saw him breaking out in the manner he did in 2014. He held opposing batters to a .155 average and struck out 104 of the 247 batters he faced (42.1%). Over the second half of the season, he struck out 51 of the 108 batters he faced and held the opposition to a .144 average. The only flaw in Boxberger’s game is that he can give up the occasional home run, and did so nine times in 2014, four of which came off his secondary pitches. More often than not, he’s going to get the swing and miss the team needs and he will resume his high leverage work in 2015 to help get the ball to whoever closes for the team in 2015. Boxberger has the skills to fill that role himself, and he may get that chance to begin the year thanks to Jake McGee's expected absence on Opening Day following elbow surgery.

Nick Castellanos

Detroit Tigers  Third Baseman

Year G AB R H 2B 3B HR RBI SB CS BB SO AVG OBP SLG OPS
2015 Proj. 146 545 59 144 32 5 13 67 3 1 39 132 .264 .313 .413 .726
As the Tigers’ top positional prospect heading into the 2014 season, many pundits had high hopes for Castellanos. On the surface, Castellanos had a mediocre first full season in the majors, hitting .259/.306/.394 with 11 home runs, 66 RBI and 54 runs in 533 at-bats while serving as the Tigers’ full-time third baseman. Similar to his results in the minors, Castellanos had trouble with his plate discipline, finishing with 24.2% strikeout rate and 6.2% walk rate. He also struggled defensively, ranking last in the majors at UZR for third basemen. The defensive struggles can partially be chalked up to the Tigers juggling Castellanos between the outfield and third base in 2013. With a full-year of playing third base at the major league level under his belt, Castellanos should show improvement on defense. And some of the advanced metrics behind Castellanos’ performance at the plate during his rookie campaign hint at further growth to come. Castellanos did a great job limiting infield flyballs (2.1% IFFB) and he ranked second among qualified hitters with a 28.5% line-drive rate. The Tigers appear to be committed to Castellanos as the team’s third baseman of the present and future, so he will have a long leash to work through the issues that arose throughout his rookie campaign. The 23-year-old showed consistent improvements in both plate discipline and power as he made his way through the minors, and it wouldn’t be a surprise to see similar improvements as he becomes acclimated to the majors.

Want To See Our Full List Of 2015 Sleepers?

Imagine how confident you'll feel going into your draft with sleepers from the premier fantasy baseball source on the web. Once you sign up, you'll not only get access to this list, you'll completely unlock every page on RotoWire.com.

Get Instant Access To Our 2015 Fantasy Baseball Sleepers

P.S. Here at RotoWire.com, we've been giving out high-quality fantasy baseball advice for over a decade and we've won nearly three times as many industry awards as our next closest competitor. Try us out this season and we'll help you look like a genius.

Latest Fantasy Baseball Articles