William Contreras’s Adjustment

On Friday, I spent part of the post gushing over the adjustments by William Contreras in a couple sim games that week. He was perhaps the best performer among hitters last week, which is very noteworthy for multiple reasons.

One, Contreras was the highest-graded prospect to get consistent playing time in the sim games. In fact, he was the only prospect to see the field besides Alex Jackson, who technically remains on the system list. This time allowed Contreras to show off a frame that’s filling out, a cleaner, more direct swing, and his sneaky good raw power.

Two, Contreras is coming off a rough 2019 in which he struggled to adapt to Double-A pitching while focusing on shoring up his defense behind the plate. As I’ve said, he needed a full 2020 season more than most prospects in order to rebound from last year, so making the most of his time in these games is important for his confidence and prospect value.

In the span of four plate appearances over two days, he homered to right-center, singled on a line the other way, and worked two deep counts in which he tracked the ball very well. He looked extremely comfortable at the plate against major league pitching.

Contreras’s performance isn’t the only positive to take from the sim games, though:

Adjustments by William Contreras

As you can see in the side-by-side video (thanks to the great Grant McAuley for creating this), Contreras has made significant adjustments to his swing since his first full pro season in 2018.

The swing on the left is the one I saw when I first wrote up the catcher at Low-A Rome. While there was length and an inconsistent bat path, the framework was there for a solid, athletic stroke. That swing was unusually loose and athletic for a young catcher, and there was an explosiveness you want to see from a 20-year-old. The hips cleared and he used his lower half very well. The hands were quick to the zone because of his natural twitchy athleticism, and he exploded through the ball with very good loft.

The issue with the left swing was inconsistency born out of length. He gathered his entire momentum deep on his back side before generating it to the front side at fire. His load was deep both in the hands and body, which created a long path to the zone. That left him susceptible to getting beat between pitches and producing an inconsistent swing plane.

Despite the inconsistencies, I went all in on Contreras’s bat and overall profile at the time because of the natural looseness and athleticism that you rarely see in a catcher. Not many were talking about his power, but it was above-average raw even then. I thought he would at least reach an average hit tool and his game power would match it, if not reach above on both.

William Contreras, Too Soon for Two-A?

The 2019 season was a reminder that raw catchers can go different ways developmentally. Contreras focused on shoring up his defense, which remained raw receiving-wise. He was pushed to Double-A before the bat was ready, and he struggled to keep his head above water. At the same time, adjustments were being made at the plate and that athleticism hadn’t gone anywhere. You don’t give up on an ultra-athletic catching prospect that quickly, which is why I held my grades and kept him as my highest-graded catcher in the Braves system despite the emergence of Shea Langeliers.

Fast forward to these sim games and the swing on the right. This is the swing that will help Contreras reach the grades on which I held firm.

Analysis of a Swing

He remains tall but is much more balanced between his front and back sides, similar to Ronald Acuña Jr. before the load. There’s a simple weight transfer from load to fire, and his hands are in an optimal position to fire, which is triggered by a controlled leg kick. Despite toning down his load, Contreras hasn’t lost his explosiveness through the ball, clearing his lower half very well and letting his hands explode. He also continues to show a good ability to stay inside and let his raw power carry the ball to the deep parts of right-center. A more balanced swing also helps him cover the outer half better and with more consistent, impact contact.

The swing on the right allows Contreras to tap into his feel to hit with a more consistent bat path. He’s always had an idea at the plate and sees the ball well, but a cleaner, more direct stroke allows him to barrel it up more often. This in turn allows him to tap into his raw power more often, evident in the video above when he stayed within himself, remained balanced and barreled it up for a right-center bomb.

Something else that allows him to stay controlled and tap into that power? A frame that’s filling out. Contreras looks noticeably stronger in both halves, especially a thicker lower half. He’s no longer as much of a wiry, projectable athlete. He has filled out to become a strong, durable catcher while maintaining his twitchy athleticism.


Yes, it’s just a sim game against pitchers who are ramping up for the season, but the difference is in the swing and frame. Contreras has made significant adjustments to help utilize his across-the-board tools. That’s why your eyes should be drawn to looseness and twitchy athleticism when watching prospects. That’s why I stuck with Contreras as the highest-graded catcher in the system.

Thanks for reading David Lee’s breakdown on William Contreras. Find more breakdowns of Braves prospects over at David’s newsletter, which is the best coverage in the system, and check out all of our pieces on Braves prospects right here.

36 thoughts on “William Contreras’s Adjustment”

  1. Thanks for this writeup, David.

    That Grant McAuley GIF is drool-worthy.

  2. Excellent writeup. This is the main reason I keep coming back to Braves journal. There are people like you, David, who have great insight and gladly share it with us. Thank you.

  3. We’re sitting at 10 days until “Opening Day” and the MLB sky hasn’t fallen yet. Braves have had no new positives since intake. I’m feeling optimistic.

  4. I’m not against more players opting out. I just want them to not be playing for our team.

    In all seriousness, I think some of these guys overreacted, but whatever. This season will include 98+% of the game’s major league players, and that number could fall precipitously and we’d still have plenty of talented players to watch and enjoy.

  5. I will say that a good bullpen could be much more of a contributor to a good season than normal. I don’t see most starting pitchers being able to go more than 6 or 7 innings for the first 2 to 3 weeks, and that’s over 1/4 of the season. While possible, a bunch of mid season deals for bullpen arms probably won’t have a big affect like last year did for us.

    The Braves’ bullpen could be set the team up perfectly for success. I think we’ll know pretty quickly.

  6. I might be nice to get our best overall player and best bullpen arm back from the clutches of the coronavirus.

  7. Returning to JonathanF’s post from yesterday, my first thought was disappointment that he’d revised his expectations downward. One of my favorite preseason rituals is JonathanF’s prediction that the Braves will go 162-0. And now we’re just shooting for a .700 season?

    Seems like the soft bigotry of low expectations.

  8. Any thoughts from the exhibition last night? It was surreal to see baseball on TV. Sounds like Pache escaped serious injury from an awkward slide. He crushed a Josh Tomlin slider earlier in the game.

  9. I’m a dolt, and I missed it. Braves14 told us it was on FSN, and I was thinking FSS, which I don’t get.

    Not sure what you make of an intrasquad game. Your hitter’s failure is your pitcher’s success, and vice versa. I think there’s definitely some excitement about Pache.

    The question I have with Pache is an overall question about prospects: is just reps, or time and reps? Pache has missed about 200 PAs in AAA. But he also got 3 months older, was able to do 3 months of lifting, training, and development. Did Pache get better in these 3 months, or are the PAs and reps the only thing that creates improvement? I say he got better, personally.

  10. My general assumptions are:

    • Young players need reps more than veterans
    • Veterans need time off (including alternative personal training) more than young players
    • Hitters need reps more than pitchers
    • Pitchers need time off (including alternative personal training) more than hitters

    Hence, I’d put Pache in the category of guys who really need to face game pitching and game situations, while Tomlin would be in the exact opposite category.

  11. I really like Puig, but I thought we were looking for a lefty bat? I guess no good ones available. Can’t wait to see Puig and Acuna interact.

  12. We’re minus Markakis and McCann and plus Ozuna and Puig.

    Are we still in Georgia?

  13. In a vacuum, seems like a good pickup despite our continued need for another LH bat. I also think Snitker is a good bet to keep Puig on an even keel as Snit seems to have a true gift for managing personalities. A marginal improvement over Duvall isn’t sexy, but better’s better.

  14. This is the first time in months I’ve really enjoyed my Twitter feed.

  15. So I guess vs LHP you’ll see
    LF – Duvall
    CF – Acuña
    RF – Puig

    Vs RHP

    LF – Puig
    CF – Inciarte
    RF – Acuña
    (They may consider keeping Puig in RF full time and moving Acuna to LF since Puig has played his career in right.)

  16. Puig has reverse splits (fairly large ones) which is pretty common from Cuban norm players. He’ll start against RHP. Duvall will still see time against LHP. I’d guess Riley, Camargo, Acuña, Duvall, and Ozuna play against LHP.

    Acuña is staying in RF, IMO.

  17. That commonality didn’t extend to our last Cuban star. Hector Olivera sucked against both.

  18. @34 oh yeah, the signing bonus

    after taxes/agent/buscon fees , he might still have cleared over 30 million net, though
    absolutely disgusting

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