Jake Lamb - Jake Lamb played just 56 games in 2018, dealing with major injuries. He ended up going under the knife later in the year, having surgery on his shoulder. Lamb is just 28 years old, and is a big part of this Arizona lineup. He is a lefty bat that breaks up a string of right-handers, and also plays strong defense. When Lamb came back for his 50 games played, he struggled hitting .222. If Lamb shows any sort of signs of the shoulder surgery, there could be more DL stints in place. Lamb comes in as a risky fantasy pick for 2019, but also could be a key bat that doesn’t quite get right.
Taijuan Walker - Taijuan Walker had been turning things around in his career, and then Tommy John surgery popped up in the middle of April. Walker is still on the younger side and has time to recover from this injury. Usually pitchers make a full recovery, but of course there is going to be some limitations in the beginning of the season. Any sort of discomfort we would see Walker go right back on the DL. Arizona could be looking at a thin rotation if Patrick Corbin or Zack Greinke leave. Corbin is a free agent, while Arizona is shopping around players. If they plan on staying competitive, Walker will need to come back and show signs of life.
Going back to the early 2000s, we saw Luis Gonzalez start to wear down after a historic few seasons for the Diamondbacks. Gonzalez went down with a ruptured tendon in his elbow, hitting the 60-day DL back in 2004. He missed the second half of that season, and had to rehab during that offseason. A few seasons later we saw Randy Johnson start to breakdown before going to the Yankees. Johnson was dealing with back surgery, and struggled to get back in the 2007 and 2008 seasons.
Brandon Webb had his career somewhat cut short, and went to the 60-day DL back in 2009 with bursitis in his right shoulder. He missed the rest of the season, and this is where he started to struggle with on and off again injuries. Patrick Corbin was one of the more recent pitchers to have Tommy John surgery, and missed most of 2014 and some of 2015. Corbin has rebounded nicely, and that slider usage was always going to give him trouble. A.J. Pollock has been dealing monthly injuries over the last few seasons, dealing with fractures in his hand and his elbow.