4.) D.J. Peterson – 3B/1B
Date of Birth: 12/31/91
Height/Weight: 6’1/210 pounds
Acquired: Drafted in 1st round (12th overall) in 2013
After 2014, it looked like the Mariners had finally nailed a first round pick. That year, D.J. Peterson hit 31 long balls, racked up 111 RBI and slashed .297/.360/.552, though he did strike out 116 times. With that year in the books, Peterson looked like he had the inside track to getting to the bigs in quick time. Then 2015 came and all that evaporated. Peterson dropped down to just seven home runs, 44 RBI and slashed only .223/.290/.346 playing mostly in AA.
Obviously the Mariners are nowhere near ready to give up on him, but it definitely is concerning that Peterson could decline so significantly after just one year. With a full year at Tacoma coming up, 2016 is a big one for Peterson. If he can put together a good year, he’ll very likely see time in Seattle next year. If he can’t, then the worries will increase and the seeds of doubts will be planted as to whether or not he can make it. Peterson isn’t great with the glove nor does he run that well, so if he’s not hitting the ball, he’s not providing much to the team.