The Cubs promoted Triantos from Double-A Tennessee to Triple-A Iowa on Sunday, Tommy Birch of The Des Moines Register reports.
Triantos will head to Iowa after he compiled a .300 average with seven home runs, 40 RBI, 63 runs scored and 38 stolen bases over 89 games with Tennessee. He'll join fellow infielder Matt Shaw and outfielder Kevin Alcantara in being promoted to Triple-A.