When Merv Rettenmund was hired to replace Dave Magadan as hitting coach of the Padres, one of the hopes was that he would be able to get more out of the kids in the lineup. Rettenmund has been back in San Diego for one month now; what is he doing with the future of this ballclub?
The answer, albeit in a small sample, is very good things. Here’s a quick look at how Josh Barfield, Adrian Gonzalez, and Khalil Greene have fared this season under both hitting coaches:
Josh Barfield
Coach |
AB |
BA |
OBP |
SLG |
BB/PA |
BB/K |
ISO |
XB/H |
AB/HR |
Mags |
220 |
.255 |
.292 |
.373 |
.047 |
.025 |
.118 |
.250 |
55.00 |
Merv |
86 |
.407 |
.452 |
.523 |
.074 |
.088 |
.116 |
.229 |
86.00 |
Stats courtesy of David Pinto’s Day By Day Database. |
The main differences in Barfield’s game are that he is doing a better job controlling the strike zone and, of course, hitting absolutely everything. There has been no appreciable change in power, which is fine because that’s not really the kind of hitter Barfield is. If even some of the gains in batting average and ability to draw walks are permanent, this bodes very well for his future. What I really like is that Barfield is doing this after the league has had a chance to see him. That’s always a good sign for a rookie.
Adrian Gonzalez
Coach |
AB |
BA |
OBP |
SLG |
BB/PA |
BB/K |
ISO |
XB/H |
AB/HR |
Mags |
212 |
.269 |
.318 |
.439 |
.066 |
.405 |
.170 |
.386 |
30.29 |
Merv |
104 |
.288 |
.308 |
.558 |
.029 |
.130 |
.270 |
.333 |
11.56 |
Stats courtesy of David Pinto’s Day By Day Database. |
This is fascinating. Gonzalez has become a completely different type of hitter under Rettenmund. He has gone from working counts and driving the ball into the gaps to hacking his way to homers. The gains in power are pretty stunning, and it’s great to see Gonzalez step up in that area. However, the drop in plate discipline is equally stunning. This is not a sustainable approach. Best guess is that at some point he’s going to have to give back some of that power unless he wants to go the way of Carlos Pena. That said, the power surge is mighty impressive.
Khalil Greene
Coach |
AB |
BA |
OBP |
SLG |
BB/PA |
BB/K |
ISO |
XB/H |
AB/HR |
Mags |
228 |
.211 |
.301 |
.399 |
.109 |
.560 |
.188 |
.500 |
25.33 |
Merv |
96 |
.354 |
.404 |
.552 |
.058 |
.375 |
.198 |
.324 |
24.00 |
Stats courtesy of David Pinto’s Day By Day Database. |
It’s early, but this potentially is a scary development for opposing pitchers. The batting average is way up, the walks are down a little, and the power hasn’t changed. One of the problems Greene has had in the past is not being able hit for average, hit for power, and control the strike zone at the same time. His average is now at .253, which isn’t great but is significantly better than it was a month ago. Greene needs 11 doubles to break his season high in that category. He needs three home runs to do the same there. And he needs 10 more unintentional walks to set a career mark. Oh yeah, Greene has 71 games in which to do all this. He’s not there yet, and who knows how much of a role Rettenmund has played in Greene’s recent improvement, but I like where he’s headed.
Conclusions
What conclusions can we draw after a month of Rettenmund? Hard to say. It’s clear that all three kids in the everyday lineup have stepped it up since he joined the club, but they’ve all done it in very different ways. Two have seen their batting averages spike, and one of those has improved his selectivity at the plate in the process. The third has seen his power blossom at the expense of his batting eye.
It will be interesting to see the types of adjustments each of these hitters has to make over the coming months and to what extent they are able to maintain the gains made during Rettenmund’s first month back with the Padres. At the very least — and regardless of whether you want to assign causality to their improvement since June 16 — Barfield, Gonzalez, and Greene have shown themselves, each other, the fans, and the brass exactly what they are capable of doing. This could be a fun story line to follow during the second half of 2006.
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