The Guardians released Barlow on Wednesday.
The Guardians designated Barlow for assignment Sunday, kyle reports.
Barlow (3-3) allowed a walk in a scoreless and hitless inning to earn the extra-inning win Tuesday over the Tigers.
Barlow pitched a perfect inning to earn a hold in Tuesday's 8-5 win over the Royals.
Barlow (2-2) allowed a hit and a walk while striking out one in a scoreless inning to earn the extra-innings win Saturday over Atlanta.
Barlow struck out two in a perfect inning to earn the save in Tuesday's 10-7 extra-innings win over the Red Sox.
Barlow (0-2) allowed two runs on three hits and a walk while striking out one over one inning to take the loss Tuesday versus the White Sox.
Barlow has allowed two runs on five hits and a walk while striking out three over three Cactus League innings.
Barlow earned a hold against Colorado on Wednesday, striking out three batters in 1.2 scoreless innings.
The Padres acquired Barlow from the Royals on Tuesday, Jeff Passan of ESPN.comreports.