Over 160 career ABs, Matt den Dekker has shown that he is most likely not going to be the Mets everyday LF for the foreseeable future. We all know he can play the position, but he can’t hit. His K rate has decreased in his current stint on the Mets, but he isn’t hitting for power, he’s not hitting for average, he’s not doing anything with his bat. His wRC+ is 56, his ISO is .047, his OPS is .518, and his K rate, while better than it was, is still 22%.
Kirk Nieuwenhuis? He’s been better this year, but he can’t hit lefties as evidenced by his 68 wRC+. He also strikes out a ton, with a 34.5% K rate. He can hit righties though, a 119 wRC+ is quite good. If we wanted to platoon him with a player that can hit lefties at the same clip, over a full season you could have the same production as Adam Jones (119 wRC+) or Brett Gardner (117 wRC+). It’s not a bad idea to platoon guys if you have the right players, but the Mets don’t really seem to be too interested in set platoons.
What about Eric Young? At this point, Eric Young can’t get on base with any consistency. It doesn’t matter how fast you are if you can only get on base at a .303 clip. He doesn’t have any power to cover that shortfall, and a 77 wRC+ is not impressing anyone. He only has a positive WAR this season because of his defense. His value at this point is to insert as a pinch runner and then have him be able to play good defense.
I think at this point, Eric Campbell should be given the chance to play LF every day. He looks like a pretty competent hitter. Actually, Campbell is more than competent. With a 114 wRC+, he’s 14% better than league average. His wOBA is .330, which is between average and above average. He’s doing all of this in spot duty. He’s not playing every day, he’s split time playing at 6 different positions and he’s still hitting. He’s actually not a bad defensive LF, in limited time his advanced stats actually have him as being an above average LF. Campbell hits both lefties and righties at almost the same exact clip (.294 vs RHP and .293 vs LHP). Campbell hits LHP with a little bit more power, but with a 120 wRC+ vs LHP and a 108 vs RHP he’s above average overall vs both. You wouldn’t have to platoon Campbell with someone else every day, which is a benefit overall to the bench and the consistency of the lineup. He could also still play either 1B or 3B and give Lucas Duda or David Wright a break while someone takes over in LF for a game or two.