2. Zack Wheeler, Philadelphia Phillies
Zack Wheeler ranks this high for what he has already done. Unfortunately, after having surgery to remove a blood clot near his elbow, he has been diagnosed with venous thoracic outlet syndrome and will likely undergo thoracic outlet decompression surgery, which means a six to eight month recovery period. Wheeler had been the top starting pitcher for the NL East-leading Phillies and was on pace for 200+ strikeouts for the fourth time in the last five seasons.