Preseason ADP: 30.66
Shortstop appeared to be deep in talent prior to the season, and there were a couple of different options here with regard to disappointing players. However, instead of going with the more popular answer in Trevor Story of the Colorado Rockies, we're going with Boston Red Sox shortstop, Xander Bogaerts.
After a year in which he posted a 115 wRC+ while also watching his power emerge in the form of 21 homers and a .152 ISO, he followed that up with marks of just 96, 10, and .130, respectively. A rather noticeable split is his performance between the first and second half, where his wRC+ went from 111 to 77. Some of those second-half struggles can be attributed to being hit on the hand with a pitch right before the All-Star break, which impacted his offensive performance more than expected.
But even if we take a deeper look at what he did in the first half, his power wasn't the same. He did hit 6 homers and posted a .144 ISO, but it's hard to hit for power with a 50.8% ground-ball rate and 27.7% fly-ball rate, which is what Bogaerts did prior to the All-Star break. And with a .363 BABIP to boot, he was due for some negative regression as it was.
That injury to his hand didn't help things, though. Hindsight is 20-20, and it gets more frustrating when guys like Didi Gregorius (280.30) and Zack Cozart (378.47) had better offensive seasons despite not going off the board until much later.