Trevor Williams To Open Season In Nationals’ Rotation

The Nationals brought Trevor Williams back on a two-year, $14MM free agent deal this week. The veteran righty spoke with the Washington beat (including Spencer Nusbaum of the Washington Post and Mark Zuckerman of MASNsports.com) this afternoon and indicated he’ll be part of Dave Martinez’s rotation.

While that’s not surprising in isolation, it potentially sets up a camp battle if Washington sticks with a five-man staff. They signed righty Michael Soroka to a $9MM deal to work as a starter. The Nats are also bringing back four pitchers who started at least 19 games last season: Jake Irvin, MacKenzie Gore, Mitchell Parker and DJ Herz.

All four of those returning arms had productive campaigns. Gore is a former top prospect who posted a 3.90 earned run average while striking out nearly a quarter of opponents across 32 starts. He’ll certainly be in the rotation. Irvin led the team with 187 2/3 innings and turned in a 4.41 ERA with decent underlying metrics. The 27-year-old righty did seem to wear down in the second half, as he allowed a near-6.00 ERA after taking a 3.49 mark into the All-Star Break. He still seems likely to be a starting pitcher himself.

If Washington wanted to begin the year with a five-man staff, that could leave Parker and Herz battling for a job if everyone comes through Spring Training healthy. Herz showed more swing-and-miss ability, fanning nearly 28% of opponents with a 12.9% swinging strike rate in 19 starts as a rookie. The southpaw’s 9.4% walk rate was the highest of any of Washington’s starters, though. Herz has had far more worrisome walk numbers in the minors, including a massive 19% clip over 10 Triple-A starts last year.

Parker, 25, profiles as a steadier back-end arm. He made 29 starts during his debut campaign and turned in a 4.29 ERA through 151 innings. He struck out 20.6% of opponents against a tidy 6.7% walk percentage. Parker doesn’t throw quite as hard as Herz does and doesn’t miss bats at the same rate, but he looks the part of a league average starter.

Washington used a six-man rotation when Williams returned from injury late last season. Patrick Corbin, who is now a free agent, was on hand in the role that Soroka would play this year. That’d be the simplest solution if all six starters are available on Opening Day. Each of Gore, Irvin, Parker and Herz have minor league options, though, so the Nats could send anyone from that group to Triple-A if they wanted to move to a five-man…