DJ Peterson & the Wisdom of First Round First Basemen
In June the Seattle Mariners took the University of New Mexico’s D.J. Peterson with the twelth overall pick in the Rule 4 Amateur Draft. Peterson represented one of the safest, most easily projectable bats in the draft class. He had mashed the ball all Spring for the Lobos and led the team to a Super Regional berth. His 18 home runs were good for third most in Division 1 – although he did play his home games in a very homer-friendly park. His short, explosive swing and quick hands excited scouts and appealed to scouting directors looking for a bat that could help relatively quickly. With a strong pro debut Peterson finished 2013 looking like a player every team would be glad to have in their farm system. There remains some questions as to whether Peterson can stay at third base in the long term though, and where he plays could swing his value pretty drastically.
As someone who covers amateurs and the draft fairly extensively I often see fans that prefer their team avoid a player like Peterson if there is some question of him moving to first base. After all, the defensive spectrum and conventional baseball wisdom tells us that good teams are built up the middle, with players on the right side of the defensive spectrum. Talking to amateur scouts I encounter a different attitude. They find it more than difficult enough to “hit” on a player and are quite often happy to find a safer choice like Peterson than they can project as a major league bat. After all, the general success rate of any first rounder making the majors isn’t great, so for many it’s very enticing to find a player you’re reasonably confident will hit in the big leagues. Both viewpoints have merit, of course. Personally, I have to be really convinced a player has a special bat for me to endorse him as a top of the first round pick. The offensive threshold expected at first base is just so lofty that it troubles me some to spend early picks on players with uncertain profiles. A prospect can develop into an above average major league hitter and still be only the 16th best first baseman in the majors (as in the case of Nick Swisher this season with a .336 wOBA). When calculating WAR the positional adjustment for third base is +2.5, which is the same as that for second base and center field. The adjustment for first base is -12.5. Given the broad range of available quality hitters in free agency at first base and the extreme developmental demands on a first base prospect’s bat the question that then comes to mind is whether it makes sense for teams to draft a first baseman in the 1st round.