Almonte will be called up as the 26th man for Monday's doubleheader against the Giants, Kyle Newman of The Denver Post reports.
Almonte owns a strong 2.45 ERA in 11 innings for the Rockies this season, though his 8:6 K:BB suggests he hasn't pitched nearly that well. His ERA in 24 innings for Triple-A Albuquerque is a mediocre 4.88. He'll likely head back to the minors following the doubleheader.