Archive for Injuries

Injuries analysis is becoming a pain in the butt. First, MLB goes and changes the days missed from 15 to 10 thereby nullifying several projection models. And now they’ve gone and renamed the Disabled List the Injury List. I think of naming it the BDL (Broke D__k List). I’ve been waiting for a few more seasons of DL data to create a new formula which will become obsolete with the 12-day DL but why wait. I have two seasons of 10-day IL information to create a few comparisons, especially for pitchers.

While I’ve historically collected the data, Ryan Brock jumped in and completed the 2018 season. I’m not sure if I would have gotten to pulling it together because when I normally do it (post-season), I was finishing my book. I can’t thank Ryan enough.

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Injuries of the Leading Shoulder in Power Hitters

When a hitter is in the batting stance, their leading shoulder is more responsible for power production than the trailing shoulder. For a right-handed hitters the leader shoulder is the left shoulder and it is just the opposite for left-handed batters. An injury to either shoulder will affect a hitter, but an injury to the leading shoulder is far impactful. The leading shoulder deals with a tremendous amount of force at two points during the swing. First, when the hitter accelerates the arm forward and extends their elbow. Second, during the follow through the front shoulder has to decelerate the arm and bat. An injury would cause pain at both points. The body is very good at protecting itself subconsciously from pain. Despite a player’s best efforts, the body will decrease the amount of force produced to avoid pain. Read the rest of this entry »

I’m finally at the point where I need to start working in replacement level production into my projections. Today’s focus is on hitters will miss a set time frame or just assume will miss some time. I’m not going to work in players who will miss time here and there (e.g.the Ryan Braun special) for this or that nagging injury. Instead, I’m focusing on batters who can be DL’ed and someone else can take their place.

To evaluate these players, their time off needs to be determined (my goal today) and then replacement level stats can be added in for these off weeks. The replacement level stats will be an average of the available waiver wire batters. While these replacement level players aren’t great, they will provide some production until the rookie/injured/suspended player returns. With every league being unique, owners are going to need to find this talent level for their own league.

And remember, these are my estimates (link to on-going updates). Each owner should make their own adjustments for their own risk tolerance.

Injured with a known time frame

Gregory Polanco: He had shoulder surgery in mid-September and had a seven to a nine-month recovery time frame with a mid-April to mid-June return.

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The Back Problem

Full disclosure, I am a huge Los Angeles Dodgers homer, so it pains me to write this article, but it has to be done. Clayton Kershaw won’t be a top 25 starting pitcher in 2019, despite his tenacity, drive, and historical value. Whether people realize it or not, he was not a top 20 pitcher in 2018. Kershaw’s well-known diagnosis of herniated discs that he’s battled for several years and a physiologic phenomenon known as pain inhibition will limit his innings and his production. Here is the simple version.

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2018 Knee Problems

Before a diagnosis was divulged, I watched Jose Altuve slide into second-base and come up a little gimpy in the playoffs warning bells were going in my head. He missed 3 weeks from late July to mid-August, and as I sorted through the possibilities of what could be wrong, I grew more and more pessimistic. Read the rest of this entry »

I’ve always been a week or two behind evaluating hitters so I continue trying to find ways to gain an edge. Today’s stab in the dark is trying to see if StatCast data can determine if a player is hurt. A recent study of mine found no correlation between playing through an injury and exceeding their projection in the next season. Instead of looking at preseason projections, I’m going to go a little more in-season today and determine how much of an impact an injury has on a hitter’s in-season production.

As Al showed, there are a ton of metric available StatCast batted ball metrics to use. I started down the path of using several of them but quickly found there is more to injuries than just power. A hitter’s plate discipline and speed results (e.g. turning singles into doubles) also matter. Instead of incorporation all of them in, I decided to use BaseballSavant’s xwOBA metric to measure a hitter’s production since it combines all of these factors.

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One of the keys to fantasy success involves finding when projections can be systematically off. The hard part for fantasy owners is that most of these findings, like pitch velocity, get quickly incorporated into projections. Since it’s difficult to find these discrepancies, I was intrigued when I saw this quote by Mitchel Lichtman (MGL) in an article he wrote:

So, the substantial under-projections seem to occur when a player gains speed but his wOBA remains about the same.

And by substantial, it was a 22 point difference is wOBA. This is a major difference and could point owners to some nice upside plays. I decided to go ahead and dive in.

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Dammit. For a few years, I followed an old study showing hitters who played through an injury would outperform their next season’s projections, especially in relation to power. Last offseason, I collected a list of 26 such hitters. When I went to compare this group’s projections to their actual performance, I found no overperformance and I’m not sure how I’ll value them going forward.

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Mitch Haniger surprised about everyone this season with top-25 production when his average draft position was over 200 in NFBC leagues. In all fairness, he should have made several sleeper lists but the industry failed to pick up on his productive but ignored 2017 season.  He’s the type of hitter owners need to focus on rostering, late-round injured hitters.

His stats speak volumes. Here are some of Haniger’s projections and results over the past two seasons.

His projection coming into 2017 was decent with a 20 HR and 8 SB profile when prorating to 600 PA. The season started out great until he went on the DL with an oblique injury which lasted for over a month. He came back from the DL, struggled, got hurt a coup of times (finger and face), and finally turned it on over the last month. This profile screams sleeper and everyone slept on him.

By just prorating his 2017 season to 600 PA, he would be at 23 dingers and 7 bags with an acceptable .282 AVG. His results were similar to another pre-season unknown, Marwin Gonzalez (23 HR, 8 SB, .303 AVG). Gonzalez’s average ADP was 123, about 100 picks before Haniger went off the board.

As for Haniger’s 2018 season, he showed the value of a well-rounded player. A near .300 batting average, over 20 homers, and about 10 stolen bases placed him as a  top-25 overall batter. Unexciting stats can still be good.

Going forward, owners can take several lessons from this failure. First, dig into hitters after pick 100 who struggled with injuries but showed positive production when healthy. Most owners are going to hope the top names like Kris Bryant and Jose Altuve will rebound. They aren’t going to surprise anyone. Instead, players like Kyle Seager (toe), Steven Souza Jr.(pec), and Jorge Soler (rib) might be acquired for nothing and end up being a top-50 player.

Another item is to prorate each player’s previous season to 600 plate appearances to see if anyone pops up if given more playing time. With Haniger’s nearly identical pro-rated 2017 and 2018 seasons, his 2017 season would have stood out and owners could have taken notice. Instead, he was relegated to the reserve rounds.

Missing on Haniger’s points to some obvious projects for me later in the offseason. Until then, let me know of any players who the industry missed on and there was no obvious cause.

When I hear or read about a hitter playing through an injury my interest perks up and he becomes an immediate draft target. Standard projections have no idea these players played hurt and the lower production keeps down future estimations. Savvy owners can give these players a small talent bump and reap some nice rewards. My current request to create a detailed list of hitters playing through injuries for 2019 preseason research and to test after next season.

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