The Nationals continue to evaluate candidates for the final spot in their rotation. Manager Dave Martinez confirmed to reporters (including Mark Zuckerman of MASNsports.com) that four pitchers will be in the Opening Day rotation if healthy: MacKenzie Gore, Michael Soroka, Jake Irvin and Trevor Williams. The Nats haven’t revealed in what order those pitchers will take the ball, but the more meaningful development is that there’s only one rotation spot up for grabs.
There appear to be three candidates for that job. Mitchell Parker and DJ Herz are coming off solid rookie seasons. The Nats added former NPB southpaw Shinnosuke Ogasawara on an affordable two-year, $3.5MM free agent deal. All three are left-handers who are in their mid-20s and aiming to break camp for the first time in their MLB careers.
Parker is the most experienced of the bunch. Washington called up the 6’4″ southpaw in the middle of April. He stuck in the rotation for the remainder of the season. Parker made 29 starts and worked to a 4.29 earned run average through 151 innings. He posted a slightly below-average 20.6% strikeout rate against a solid 6.7% walk percentage. Parker doesn’t have huge stuff but looks the part of a solid back-end command artist.
Herz has the opposite profile. He missed bats on nearly 13% of his offerings. Herz posted a 27.7% strikeout rate, continuing a trend of plus swing-and-miss numbers he showed throughout his minor league career. His minor league walk numbers wouldn’t point to a long-term future in the rotation, but he showed surprisingly reasonable control (9.4% walk rate) over his first 19 MLB starts. He turned in a 4.16 ERA through 88 2/3 frames.
Ogasawara’s profile is closer to Parker’s. He allowed 3.62 earned runs per nine over his nine seasons in Japan. Ogasawara worked to a 3.12 ERA across 144 1/3 frames for Chunichi Dragons last season. He had a well below-average 13.6% strikeout rate that explains his modest deal. He walked fewer than 4% of batters faced, so he’s a good strike-thrower, but it’s not clear whether his stuff will play against big league competition.
No one from this trio has had an especially impressive camp. Parker’s results have been the best. He has allowed four runs through 7 1/3 innings, striking out seven without issuing a walk. Ogasawara has surrendered 11 runs (seven earned) with five walks and six strikeouts over 9 1/3 frames. Herz has allowed eight runs (six earned) with seven free passes and only three punchouts through 6 2/3 innings. While it’s not worth reading much into a handful of Spring Training appearances, Parker’s greater experience seemed to give him a leg up on the job entering camp. If that were the case, it’s hard to argue that Herz and Ogasawara have shown enough to overtake him to this point.