Heaney underwent Tommy John surgery in July of 2016, which caused him to miss a majority of this past season while he recovered from the procedure. The 26-year-old was able to return to the mound in mid-August, but was only able to make five starts until a shoulder impingement shut him down for the rest of the year. At this point in time, Heaney appears to be fully healthy for the first time in over 18 months, as manager Mike Scioscia even admitted that he would have let Heaney make a late-September start if the team had still been in playoff contention. The southpaw has the tools to be a successful pitcher in the big leagues, but he must avoid any more major injuries and do a better job of keeping the ball in the yard after allowing 12 home runs in just 21.2 innings this past year.

Heaney was in prime position to be a cog in the Angels rotation heading into 2016. He was a rock as a major league starter the season before, posting a 3.49 ERA and 1.20 WHIP in 18 starts with Anaheim, leading many to believe that his solid control would help vault him into the third or fourth spot in the rotation. All those auspicious plans came to a halt after just one start, when the left-hander left an April game with forearm tightness. Although it was not initially diagnosed as such, Heaney did in fact have a damaged UCL and ended up undergoing Tommy John surgery in July. Given the timing of the operation, there's a good chance that the 25-year-old won't be game-ready during the 2017 campaign, meaning that fantasy owners can likely wait on him until August or September in case he makes a speedy recovery. In all likelihood, though, Heaney probably won't be back to his full role until the 2018 season.

This is why we don’t judge pitchers off of 29 innings. Heaney looked like the scouting reports and minor league track record he put together prior to 2015. He’s not a “strikeout pitcher” so his 8.9 K/9 rate in the minors was due more to his polish and pitchability mixed with inferior competition. As such, his strikeout rate could get better after a couple years under his belt. He showed more of a flyball lean in the minors, but he was able to keep his home runs in check. Even if homers are a bigger issue in 2016, he does a great job mitigating walks so the traffic on the bases should be manageable. He threw 184 innings when you factor in his minor league work so he’ll be ready for a big workload. Without a premium strikeout rate, his value can come via the large volume of innings. Lock up strikeouts in the front of your rotation and then supplement with Heaney as your fourth-fifth starter and you could get a 200-inning season.

Heaney breezed through both Double-A and Triple-A last season and even earned a brief stint in the Marlins' rotation in late June. He put together an encouraging quality effort in his major league debut, tossing six innings of one-run ball in a loss to the Mets, but struggled in his subsequent opportunities before being relegated to the minors until September. The 6-foot-2, 185-pound lefty is not overpowering and his fastball averaged just 90.4 mph during his first couple of games in the majors, but he continues to miss plenty of bats with 163 strikeouts and 43 walks over a combined 166.2 innings pitched between the majors and minors. After posting a superb 2.77 ERA and 1.14 WHIP over 259.2 innings in his minor league career, Heaney has very little left to prove on the farm. Acquired by the Angels as part of a series of trades in December, Heaney will push for a spot in the Opening Day rotation with his new club this spring.

With Jose Fernandez and Christian Yelich locked into the Opening Day roster, Heaney rises to the top of the Marlins' organizational prospect rankings. He breezed through High-A Jupiter early in 2013, smothering opposing hitters to the tune of a 0.88 ERA with 66 strikeouts over 61.2 innings pitched (12 starts, one relief appearance) to go along with a 1.01 WHIP. Heaney advanced to Double-A Jacksonville for his final six starts and was equally impressive -- 4-1 with a 2.94 ERA over 33.2 innings pitched -- before making a splash in the Arizona Fall League (1.95 ERA in seven starts). Displaying steady command, the lefty works a 93 mph heater, while using his slider and curveball as out pitches. While Heaney is likely headed back to the minors to open the 2014 season, he will find his spot near the top of the Marlins' rotation sooner than later.

Heaney, the ninth overall selection of the 2012 amateur draft, flashed elite strikeout ability in his brief introduction to professional ball. He struck out 30 batters against only six walks in 27.0 innings between rookie ball and Low-A Greensboro. The 23-year-old lefty spent three seasons at Oklahoma State and arrived with the Marlins quite polished. With the experience and the talent, Heaney could move quickly through the Marlins' system in 2013 as the latest rebuilding project is well underway.