WASHINGTON -- Jackson Kent will make his major league debut Wednesday night for Washington against the Chicago Cubs after the Nationals selected the contract of the 23-year-old pitcher from Triple-A Rochester. Kent was 9-4 with a 3.72 ERA in 20 starts between Double-A Harrisburg and Rochester this season. The left-hander had 105 strikeouts in 94 1/3 minor league innings.

"There will be nerves," Nationals manager Blake Butera said. "There will be excitement, of course. There's no way to hide that. I want him to go out there and make the most of it."

Washington designated right-hander Miles Mikolas for assignment to make room for Kent on the roster. Kent, a fourth-round draft pick in 2024, is one of Washington's top prospects and could receive an extended look in the season's final seven weeks.

Mikolas, who signed a one-year, $2.25 million deal in February, was 3-9 with a 5.82 ERA. The 37-year-old reached 10 years of major league service time last week. It is the second time this month the Nationals cut ties with a veteran starter after designating Zack Littell for assignment Aug. 5.