Carlson signed a minor-league contract with the Brewers on Wednesday.
Carlson (knee) has given up two runs on four hits and three walks while striking out six over 4.2 innings across two starts for Single-A Modesto since being activated from the 7-day injured list May 4.
Carlson is on the injured list at Single-A Modesto with patellar tendinitis in his left knee, Ryan Divish of The Seattle Times reports.
Carlson (elbow) has undergone Tommy John surgery and may be out all of 2019, Greg Johns of MLB.com reports.
Carlson (elbow) threw a bullpen session Tuesday, Greg Johns of MLB.com reports.
Carlson is being held back in extended spring training, MLB.com's Mike Rosenbaum reports.