Editor’s note: Michael has previously written at Pitcher List and Baseball Prospectus, as well as his own site, Pitcher Giffer, and serves as the site manager for Bucs Dugout. You may also have seen his nifty pitch GIFs at ESPN. He’ll be contributing to FanGraphs a few times a week. We’re excited to welcome him.
Down two games to one to the Washington Nationals, with their season potentially hanging in the balance, the Houston Astros turned to rookie pitcher Jose Urquidy in Game 4 in an attempt to pull the World Series even. Not much was known or expected from the 24-year-old righty who made his post-All-Star break major league debut in July. To say Urquidy rose to the occasion on Saturday is a bit of an understatement. He kept the Nationals offense in check, throwing five innings with no runs allowed on two hits, no walks, and four strikeouts.
Urquidy spent one month with the team, was sent back down to the minor leagues in August, then returned in September. He continued to strike out hitters at a high rate, minimized his walks, and was able to deflate his ERA by four runs. He made two starts in four appearances, pitching a total of 11 innings, and allowed just one earned run off of four hits and two walks with a 2.76 FIP.
Could Urquidy develop into a front-line starter for the Astros in 2020? It’s possible, but he has an adjustment (or two) that will need to be made if he hopes to maintain his efficiency long term.
Urquidy was a relatively unheralded prospect; he currently sits at 19th in the Astros system on THE BOARD. Eric Longenhagen and Kiley McDaniel described him as having plus command, describing him at the time of their report as a “spot-starter type” but also noting there is a “chance that he actually has 7 command and is something more than that.” (That command is especially important given the diversity of arm slots from which he throws his pitches, but more on that in a moment.) With his future value rated at 40, it’s hard to imagine the rookie having the kind of outing he did on Saturday. Sure, you can point to the results of his seven starts and two relief appearances in 2019. During that stretch of 41 innings, Urquidi posted a 3.68 FIP, a 24% strikeout rate, and 4.2% walk rate. While that sounds great, it’s hardly enough data to infer future performance.
Below are the three main pitches Urquidy relies on– the fastball, changeup, and slider. He produces good movement, but notice how the fastball and changeup (sitting in the middle) arm slots are fairly close, but the slider is not:
A more drastic example appears below (with the curveball included):
Allow Brooks Baseball to show how disjointed they actually are, with Urquidy’s regular and postseason release points:

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