# Washington Nationals pitching roster changes

> Live situation record from CLSTR: https://clstr.news/situations/washington-nationals-pitching-roster-changes
> Updated: 2026-08-12T19:18:02.000Z. Sources: 12. Developments: 2.

The Washington Nationals are integrating young pitcher Jackson Kent into their Major League roster. Initial reports indicated the team was set to promote the 23-year-old left-hander from Triple-A Rochester to fill a rotation spot following the release of veteran Zack Littell.

Subsequent roster moves confirmed the team designated veteran right-hander Miles Mikolas for assignment due to a difficult season. Mikolas, 37, struggled during his first year with the team, posting a 3-9 record and a 5.82 ERA across 25 appearances. The veteran, who previously played for the San Diego Padres, Texas Rangers, and St. Louis Cardinals, as well as the Yomiuri Giants in Japan, has expressed interest in a potential return to Japanese baseball.

The Nationals officially selected Kent’s contract, clearing the way for his debut against the Chicago Cubs. Kent, a former fourth-round draft pick and prospect ranked No. 8 in the organization, enters the roster after recording a 9-4 record and a 3.72 ERA in the minor leagues this season.

## Claims

- The Washington Nationals designated veteran right-hander Miles Mikolas for assignment on Wednesday. (corroborated by 3 sources)
- The Nationals selected the contract of left-hander Jackson Kent from Triple-A Rochester. (corroborated by 3 sources)
- Jackson Kent is scheduled to make his major league debut on Wednesday against the Chicago Cubs. (corroborated by 3 sources)
- Miles Mikolas has a 3-9 record and a 5.82 ERA during his first season with the Nationals. (corroborated by 3 sources)
- Jackson Kent is ranked as the No. 8 prospect in the Washington Nationals organization by MLB Pipeline. (corroborated by 3 sources)
- Jackson Kent recorded a 9-4 record and a 3.72 ERA over 20 starts in the minor leagues this season. (corroborated by 3 sources)

## Timeline

### 2026-08-12: Washington Nationals designate Miles Mikolas for assignment

The Washington Nationals have designated veteran pitcher Miles Mikolas for assignment, replacing him with prospect Jackson Kent, who will make his major league debut.

9 sources. https://clstr.news/cluster/washington-nationals-dfa-miles-mikolas-add-jackson-kent

### 2026-08-10: Washington Nationals to promote Jackson Kent for MLB debut

The Washington Nationals are set to promote left-handed pitcher Jackson Kent from Triple-A Rochester for his MLB debut, filling a rotation vacancy left by the release of Zack Littell.

4 sources. https://clstr.news/cluster/washington-nationals-to-promote-jackson-kent-for-mlb-debut

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Cite as: Washington Nationals pitching roster changes. CLSTR, https://clstr.news/situations/washington-nationals-pitching-roster-changes