Last time, we took a look at the outfield and the platoon splits for our various outfield candidates. Today, we will do the same with the infield. I should note a couple of things before we move forward. The first and main thing is that we are looking at career splits for all of these players. Naturally, there are positives and negatives to doing it this way and we should acknowledge those here in the lab. After all, if we fail to acknowledge things that could impact our “experiments” then those experiments become less valid.
The reason why we include career numbers over 2025 numbers is that numbers in general become more valid when we include larger sample sizes. Some players have out of context seasons here and there, but the career numbers will be more relevant when we look at these things. However, some players have out of context numbers overall because they are no longer the player that put up those career numbers. Jose Altuve, Carlos Correa, and Christian Walker are not likely going to put up their career numbers this season.
The key point here is not that the player is expected to meet their career numbers, but in the differences on both sides of the plate. The rate of difference will likely hold. The second thing we should note is that Brice Mathews will not be included in the infield for a couple of reasons. The primary reason is that he does not have the sample size to give us a valid entry. Also, he appears to be on the outside looking in in terms of making the 26 man roster.
So, to remind our viewing audience, we are simply looking at career slash numbers (AVG, OBP, SLG). I will include a fourth category which will be OPS. This is just a quick mental guide to bring in a familiar number to break everything down. When it is all said and done, we will look at a common trade that has been bandied about and why it makes sense for the Astros.
Infield Slash numbers
| AVG | OBP | SLG | OPS | |
| Yainer Diaz RHP | .283 | .308 | .463 | .771 |
| Yainer Diaz LHP | .265 | .299 | .430 | .729 |
| Carlos Perez RHP | .218 | .267 | .339 | .606 |
| Carlos Perez LHP | .216 | .259 | .299 | .558 |
| Christian Walker RHP | .247 | .320 | .460 | .780 |
| Christian Walker LHP | .249 | .339 | .443 | .782 |
| Isaac Paredes RHP | .228 | .330 | .425 | .755 |
| Isaac Paredes LHP | .264 | .360 | .444 | .804 |
| Jose Altuve RHP | .296 | .352 | .451 | .803 |
| Jose Altuve LHP | .324 | .385 | .508 | .893 |
| Carlos Correa RHP | .271 | .342 | .458 | .800 |
| Carlos Correa LHP | .286 | .379 | .480 | .859 |
| Jeremy Pena RHP | .260 | .312 | .399 | .711 |
| Jeremy Pena LHP | .302 | .344 | .469 | .813 |
| Nick Allen RHP | .202 | .251 | .245 | .496 |
| Nick Allen LHP | .241 | .298 | .338 | .636 |
The important thing to note is that only one of these players is better against right-handed pitchers than lefties. When the Astros face lefties they will have five players with career OPS scores above .800. When they face righties they will have three. This is one of the many reasons why Dana Brown and Joe Espada have talked at length about adding a better left-handed hitter to the roster.
We often look at players’ overall numbers and forget that the aggregate does not represent what we see on a night to night basis. The truth is that tough right-handed pitchers will lock this team down on a number of nights. Baseball philosophers will tell you that the best thing you can do is as a pitcher is disrupt a hitter’s timing. Many things in baseball appear in a mirror image. If the job of pitchers is to disrupt timing then hitters can get pitchers out of rhythm by disrupting their timing.
If you set your team up with the same kind of hitters that all hit from the same side then it is easier for the pitcher to get into a rhythm. If you throw lefties and righties at them with some being selective and some more aggressive then you will force them to adjust to every single hitter that comes up. It is certainly possible to be successful doing that, but most pitchers would tell you that it is much more difficult.
Two players from the Boston Red Sox have been mentioned in potential deals for Isaac Paredes. Paredes is arguably a better player than one of them, but I want you to notice the breakdown of where they are most successful. Trades are often framed in the lens of who gets the better player, but it is really about making your team better.
| AVG | OBP | SLG | OPS | |
| Jarren Duran RHP | .279 | .344 | .494 | .838 |
| Jarren Duran LHP | .232 | .284 | .336 | .620 |
| Wilyer Abreu RHP | .265 | .336 | .492 | .828 |
| Wilyer Abreu LHP | .205 | .271 | .318 | .589 |
It should be noted that Duran is a Gold Glove level defender in multiple outfield slots, so he carries some value in addition to his hitting. He would likely cost Paredes and considerable other compensation. Abreu is a more realistic target because it is feasible to see a one for one swap in that instance. Paredes might be the superior hitter overall because he doesn’t disappear against righties like Abreu does against lefties. However, we have to look at how this team is set up.
As it stands, we have five hitters with a career OPS over 800 against lefties and only three against righties. It should be noted that approximately 75 percent of the starters in baseball are right-handed. A theoretical swap would net you a balanced lineup against righties and lefties. Abreu would likely take the place currently occupied by Jesus Sanchez, but when you look at the career numbers you’ll notice he is the more dangerous player against right-handed pitching.
The current advantage of the Astros is that they have a number of players capable of playing more than one position. In reality, Christian Walker is the only player on the roster locked into one spot on the diamond. That affords Espada the opportunity to mix and match based on platoon splits. Both Abreu and Sanchez should not face lefties (whichever one would be in Houston), but there are creative options available to cover them up.
Obviously, time is on our side, so when we get into Spring Training we can look at theoretical lineups against righties and lefties to see how it all stacks up. It will difficult getting everyone at bats, but there is an opportunity to set up lineups that take advantage of these splits. Stay tuned.