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Nationals DFA Miles Mikolas, add LHP Jackson Kent

By Thomson Reuters Aug 12, 2026 | 2:21 PM

Coming off his best outing in a month’s time, veteran right-hander Miles Mikolas was designated for assignment by the Washington Nationals on Wednesday.

In ​a corresponding move, the Nationals selected the ‌contract of left-hander Jackson Kent from Triple-A Rochester. Kent, who ranks the No. 8 Nationals prospect in MLB Pipeline’s rankings, is slated to start in his major league debut Wednesday against ‌the ​Chicago Cubs.

Mikolas’ first season with the ⁠Nationals has been rough, ⁠with the 11-year MLB veteran going 3-9 with a 5.82 ERA over 25 appearances (11 starts). Mikolas, 37, has been in and out of the rotation all ​season after making three consecutive starts to open the campaign.

His second ever start for the Nationals ⁠came on April 3 when he ⁠was crushed for 11 runs on ​11 hits over 4 1/3 innings by the Los Angeles ​Dodgers. He was moved into the bullpen just ‌over a week later.

His most recent start came last Thursday when he gave up six runs on 12 hits over five innings against the Philadelphia Phillies. On ⁠Tuesday, Mikolas gave up one run over three relief innings in an 8-6 loss to the Chicago Cubs.

In 266 career ⁠appearances (224 starts), ‌Mikolas is 75-84 with a 4.37 ERA ⁠for the San Diego Padres (2012-13), Texas Rangers (2014), ​St. ‌Louis Cardinals (2018-25) and Nationals. He pitched ​in Japan ⁠from 2015-17 and did not pitch in 2020 because of injury.

Kent, 23, is a fourth-round draft pick in 2024 who was a combined 9-4 with a 3.72 ERA over 20 starts at two minor league levels this ​season.

–Field Level Media