James Stephen Karinchak (born September 22, 1995) is an American professional baseball pitcher in the Chicago White Sox organization.

He split 2018 season between the Lake County Captains, Lynchburg Hillcats and Akron RubberDucks, combining to go 4-2 with a 1.29 ERA over 48+2⁄3 innings.

In his postseason debut, he gave up a grand slam to Gio Urshela then walked two batters before being removed in a loss to the New York Yankees.

Karinchak missed the first few months of the season with shoulder injury, making rehab appearances with the Columbus Clippers before returning to the major leagues on July 4.

[14] He also pitched in four postseason games, going scoreless in five innings while collecting six strikeouts and issuing four base on balls as Cleveland advanced to the AL Division Series.

[18] He was sent to Columbus for a rehab assignment in September, pitching in seven games but remaining on the injured list for the entirety of the regular season.