Graterol will be promoted to Triple-A Rochester on Sunday, Betsy Helfand of the St. Paul Pioneer Press reports.

Graterol earned the first save of his career by throwing 1.1 scoreless innings Wednesday for Double-A Pensacola.

Graterol (shoulder) was activated from the minor-league injured list Wednesday, Brandon Warne of ZoneCoverage.com reports.

Graterol (shoulder impingement) is a candidate to be called up to the majors, perhaps as early as August, Twins assistant GM Rob Antony told SKOR North AM 1500 Twin Cities.

Graterol threw a scoreless inning for Minnesota's Gulf Coast League team in a rehab outing Sunday. He reached 101 on the radar guy, LaVelle E. Neal III of the Minneapolis Star Tribune reports.

Graterol was placed on the 7-day injured list at Double-A Pensacola with a shoulder impingement, Dan Hayes of The Athletic reports.

Graterol (back) started Tuesday for Double-A Pensacola, tossing five scoreless innings in a 3-0 win over Chattanooga. He gave up three hits and two walks and struck out three.

Graterol was removed from his start with Double-A Pensacola on Wednesday due to tightness in his trapezius, Darren Wolfson of SKOR North reports.

Graterol gave up one run over 4.2 innings Friday in his debut for Double-A Pensacola. He struck out six, walked two, and twice reached 100 mph on the radar gun.

Graterol was promoted to High-A Fort Myers following Wednesday's game, Jeff Johnson of the Cedar Rapids Gazette reports.

Graterol (wrist) was reinstated from the 7-day disabled list Wednesday, Brandon Warne of ZoneCoverage.com reports.

Graterol was placed on the minor-league disabled list Saturday with a right wrist injury, Brandon Warne of ZoneCoverage.com reports.

Graterol (back) was activated from the minor-league disabled list Monday, Brandon Warne of The Athletic Minnesota reports.

Graterol was placed on the disabled list at Low-A Cedar Rapids with back spasms, Brandon Warne of The Athletic Minnesota reports.

Graterol gave up three runs (but just one earned) with seven strikeouts and no walks over 3.2 innings Friday in his first start of the season for Low-A Cedar Rapids.