Brentz (hamstring) will begin a rehab assignment with Triple-A Omaha on Sunday.

Brentz (hamstring) thew a bullpen session Tuesday and remains on schedule, Byron Kerr of MLB.com reports.

The Royals placed Brentz (hamstring) on the 15-day injured list Thursday.

Brentz was diagnosed with a Grade 2 strain in his left hamstring Tuesday, Anne Rogers of MLB.com reports.

Brentz (lat) is listed as available for the Royals' Cactus League opener versus the Rangers, Anne Rogers of MLB.com reports.

Brentz (lat) threw a live BP session Saturday, Anne Rogers of MLB.com reports.

Brentz (elbow) is expected to miss the remainder of the season after suffering a left lat strain while on his rehab assignment, Anne Rogers of MLB.com reports.

Brentz (elbow) was pulled off his minor-league rehab assignment Friday.

Brentz's (elbow) rehab assignment was transferred to Double-A Northwest Arkansas on Tuesday.

Brentz (elbow) is expected to begin a rehab assignment Wednesday with Kansas City's affiliate in the Arizona League.