Yesterday, I reviewed the starting pitchers who experienced an early season GB% surge to find out if those spikes were sustained over the rest of the season. Today, let’s now review the early season GB% decliners. Did their GB% marks rebound or remain down, increasing the risk of gopheritis? Let’s find out.
Today, let’s move over to review early starting pitcher metrics and whether the surges or declines stuck around over the rest of the season. Unlike for hitters where depending on the type of hitter they are, the optimal batted ball profile is easier to determine, it’s not as straightforward for pitchers. So this isn’t necessarily a “good” list to be on, but it could change the shape of the pitcher’s performance. More grounders should result in fewer homers, but likely more hits allowed and a higher BABIP. So let’s get to the names of those that had increased their GB% by at least 10% through Apr 19 and see whether their GB% spikes were sustained.
Yesterday, I reviewed the hitters who had raised their FB% marks by at least 10% through Apr 17 versus 2020. Let’s now switch gears to reviewing those hitters who saw their FB% marks decline by at least 10% through Apr 18. Did these early FB% declines suggest a down power year? Let’s find out.
Why do we care about a batter’s fly ball rate? Because all else being equal, a higher fly ball rate will result in more homers, so paying attention to a hitter’s batted ball profile is important. Typically, analysis centers around a hitter’s raw home run total and whether it’s higher or lower than expected at any point during the season. Sometimes, we see HR/FB rate thrown in as well to assess how real the home run surge or collapse might be. But fly ball rate, or FB%, is just as important, as it’s one of the three drivers of home runs, along with strikeout rate and the aforementioned HR/FB rate.
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Today, I complete my review of the early starting pitcher velocity changes to see how whether it was an early sign of what their velocities will be over the rest of the season. We’ll finish our reviews up with another set of velocity gainers.
Let’s continue reviewing the early season starting pitcher fastball velocity changes. Today, we’ll look at the decliners through the first start and compare those velocity readings to what each posted through the rest of the season. Were these first start declines early warnings to sell while you can or did the pitchers quickly bounce back?
Back during the first week of April, starting pitchers had made just one start…if they had taken the mound at all yet. So obviously, there wasn’t a whole lot to analyze. Rather than go dark for several weeks until there’s enough of a sample size to say anything, I decided to look at which starting pitchers had increased their velocity the most versus 2020 in that one and only start. Now I want to go back and find out if these pitchers actually sustained those increases, and if so, did it also result in a strikeout rate spike. Let’s find out.
After just a few games this year, I decided to check in on batter maxEV. If a batter was already setting a new high only a couple of games into the season, I wondered if it was an early sign of a power and HR/FB rate surge over the rest of the year. So let’s now review those hitters who increased their maxEV the most at that point to see if it was indeed a hint of things to come. As a reminder, maxEV may have been recorded on a ground ball, which is far less exciting than one that comes on a fly ball. It doesn’t matter how hard a grounder is hit, as it cannot leave the park! A better look would have been to filter for only fly balls, so I’ll look at it that way next season.
Today, I share the final review of my pre-season Pod Projections posts. This time, we shift to a starting pitcher, Zach Plesac, whose original writeup is here. Plesac did post a sub-4.00 ERA during his 2019 debut, but it wasn’t backed by his skills, as he handily outperformed his ugly 5.13 SIERA. During the short 2020, he enjoyed a true breakout as his strikeout rate surged thanks to pitch mix changes. Let’s see how he did for an encore and how it compared to the projections.
Let’s continue reviewing the Pod Projections I shared early in the year. Today, I’ll review my Trent Grisham forecast. You can find the original writeup here. Grisham enjoyed somewhat of a fantasy breakout during the short 2020 season, as he went 10/10 over 252 plate appearances, putting him on a 20+/20+ pace over a full season. We fantasy owners salivate over that power/speed potential. Let’s see how he followed up and compare it to my projections and the rest of the forecasts.
