Hill vs. Johnson: An Early Comparison
The trade that buckled the stock market and caused a work stoppage across America is now two weeks into its existence. It came out of nowhere, like a time machine suddenly popping up in someone's bathroom at an unfortunate time. It was sudden, it was shocking, and to a few people it was slightly disturbing. Well, the results are in - sort of - so it's high-time we get this party started.
Here's the breakdown as each player has played 14 games with their new team as of today's date:
| Player | AVG | OBP | SLG | OPS+ | BB% | K% | ISO | BABIP | UZR | WAR |
| Aaron Hill | .375 | .410 | .589 | 169 | 4.9% | 11.9% | .214 | .408 | 0.2 | 0.8 |
| Kelly Johnson | .250 | .339 | .462 | 114 | 11.9% | 28.8% | .212 | .333 | 0.4 | 0.3 |
Let's start out with the obvious stuff. Kelly Johnson hasn't changed much as he continues his Mark Reynolds-esque K% while still mashing the ball like Zeus on lightning. Meanwhile, Aaron Hill has maintained his BB:K rates and has made some nice defensive plays. As advertised, for the most part. Right, yeah, we don't care about all that, let's get to the juicy bits.
As you can see, Hill's ISO has taken a massive spike. He has nine extra-base hits in just 56 at-bats - nearly half of what he produced in 396 at-bats with the Blue Jays - and he is currently riding a ten game hitting streak. His BABIP is certainly a large factor in this but as anyone who has been watching D-backs games lately can vouch for, he's been hitting balls hard. His LD% is at an amusing 28% while his flyball percentage has dropped significantly to 34%. In other words, he's Justin Upton-ing the baseball right now. If you pair up the power with the discipline at the plate, you get a mirror image of Kelly Johnson without all of the strikeouts. That makes Kevin Towers really happy.
Another plus on the Hillside of things (teehee) is that he has done a fairly significant chunk of his damage while on the road. You can argue that Coors Field and AT&T Park are just as generous as Chase Field is but you get what I'm saying. His home/road splits are similar. His O-Swing% has improved, going from chasing balls at a 32% clip with Toronto to a 25% clip with Arizona. Looks as if he's not pressing quite as much. His UZR is hard to gauge at this point given the small sample size but my eyes have witnessed him make a few solid grabs and free himself of any errors. So far, so good.
Johnson, on the other hand, hasn't been too iffy himself. His BABIP has finally regressed upward and, much like Hill, his LD% has increased dramatically to 26% while his flyball percentage has dipped a few points to 37%. With this, Johnson's batting average has climbed from the basement and sits at .250 (with Toronto, at least). He is also drawing walks at a slightly more favorable pace than before, raising his percentage a few points to 12%. Oddly enough, he's swinging more at pitches outside of the zone (31% in AZ to 34% in TOR) and less at pitches inside of the zone (70% in AZ to 61% in TOR). Sample size weirdness, I'm guessing. Johnson also currently boasts a better UZR despite the fact that he's committed two errors. Defensive ratings are strange.
Both players seem to be (statistically) enjoying the change of scenery so far and they're both making a decent enough pull to warrant a discussion on 2012 decisions. I was wondering if Arizona might consider buying out Hill's contract and seeing if they could persuade him to sign a more team friendly deal - say somewhere around $5MM or $6MM. Maybe something incentive based? Hey, if they can do it for Tom Gordon, they can do it for Aaron Hill.
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Helped Both Teams
Yes, so far this trade has helped both teams, since both players have improved over the last 2 weeks. For another point of view, I had also posted a trade comparison a few days ago:
Awesome
As always, thanks. I was thinking about including McDonald in the discussion but decided just to focus on the two big guys. It never even really dawned on me how well Bloomquist has been with the added rest.
Wear your own fur.
by Marc Fournier on Sep 8, 2011 5:48 PM EDT up reply actions
Like your in-depth take.
Also like the permalink - where’s the Brad Ziegler part? ;)
Goldschmidt happens.
Thanks
Yeah, I was going to write up both trades, but ran out of time and decided to stick with just the Jays deal. And now no electricity…
I like the analysis
But it’s just such a small sample. You could also argue that the Jays got the better player if BABIP-adjusted. Move Hill’s BABIP down to, say, .300, while subtracting just for singles (a poor assumption, but one in Hill’s favor), and you get:
21 H – 1 HR – 20 Hbip, 20 / .408 * .300 = 14.7 Hbip+ (when in doubt on what to name an adjusted stat, just add a ‘+’…) ~ 15 Hbip+
15 Hbip+ + 1 HR = 16 H+, 16 / 56 AB = .286 BA.
With his same walk rate, that would make for a .321 OBP.
So, when adjusted, Hill has a lower OBP, almost identical ISO, and has played in a more hitter-friendly park. The only argument Hill has is the value of a single over a walk, which admittedly is a legitimate argument. I dunno what Hill’s wRC+ would be in this case (it would vary by what ballpark Hill’s singles would be taken away from, which is a bit silly).
Then again, that entire analytical argument can be derailed by an argument saying that Hill has simply hit the ball harder.
Founder and Chairman of the Hire A Body Double For David Hernandez's Right Arm Commission. A non-profit organization.
by Dan Strittmatter on Sep 8, 2011 12:34 PM EDT reply actions
FanGraphs
claimed Hill had posted a 111 wRC+ if you subbed his BABIP for .284, his career number, which I don’t entirely understand, since his wRC+ would still be dependent on the distribution of extra base hits, so I don’t think you can make that simplistic an argument.
That having been said, it’s money in the bank. If you want to claim that KJ’s true talent is greater than Hill’s, that’s fine, but I’m not entirely sure what taking away some BABIP-aided numbers does for us. He’s not this good, of course, but we know that.
You’ve also gotta take McDonald’s contributions into account, if we’re evaluating the performance of the trade.
Goldschmidt happens.
Some dude on FG
Made some wRC+ formula weighted around K, BB, HR, & BABIP. He thought it was some enormous revelation, but it’s really just an ISO regressor for balls in play that assumes all extra base hits can be regressed according to how many HR per PA a guy hits. Tons of problems there:
A) Doubles hitters who don’t hit home runs (think pre-VF Conor Jackson, A.J. Pollock) get short-changed.
B) HR/FB doesn’t stabilize very quickly.
C) It’s very misleading in small samples.
D) Why not use it to regress ISO or (doubles & triples)? That’s what is being intuitively adjusted (the hits part is easy…), and it gives you a clearer picture of what exact type of production you can expect than a blank (though helpful) wRC+ total. It just doesn’t offer much intuition.
Founder and Chairman of the Hire A Body Double For David Hernandez's Right Arm Commission. A non-profit organization.
by Dan Strittmatter on Sep 8, 2011 5:12 PM EDT via mobile up reply actions
You mean
all the hoopla over ShH? FIB?
Yeah, and now they wanna replace wRC+ in fWAR with it, too, like they use FIP in pitching fWAR…
Goldschmidt happens.
I still don't get FIB
With one of the inputs being BABIP and all. It doesn’t sound like fielding independent to me. Dan’s ‘A’ complaint is the biggest one that bugs me, though. Stephen Drew would be another guy who gets the short end of the stick. According to FIB his 2010 5+ WAR season would see his wRC+ drop 10+ points.
Wear your own fur.
by Marc Fournier on Sep 8, 2011 6:18 PM EDT up reply actions
Rather than
Fielding Independent, it’s more like “luck-independent” — though we know BABIP isn’t all just luck. “True talent” batting.
Where Fielding Independent Pitching ignores BABIP completely and says it’s all in the hands of the batter and defense, Fielding Independent Batting attempts to normalize BABIP.
Goldschmidt happens.
Which makes less sense
because batters have much more control and influence over the BABIP than pitchers. I personally don’t find any BABIP-adjusted offensive stats to be useful.
Thought about adding McDonald
To the discussion but decided just to focus on the second basemen with the big contracts. Amit has a more all-encompassing look at the trade in that perspective.
Wear your own fur.
by Marc Fournier on Sep 8, 2011 5:51 PM EDT up reply actions

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