The St. Louis Cardinals drafted the left handed pitcher with its first round pick last year.
Monday, the team promoted the 22-year old straight from Springfield to St. Louis.
And Gonzales will join his new big league team in his home state of Colorado.
Marco Gonzales is from Fort Collins and he'll start against the Colorado Rockies on Wednesday.
Gonzales is taking the place of lefty Jaime Garcia who was put on the 15-day disabled list Sunday.
Michael Wacha was also put on the DL at the same time.
Gonzales joined AA Springfield in the middle of May from Palm Beach.
In his seven starts, Gonzales is 3-2 with a 2.33 earned run average.
He also won two games at Palm Beach.
Gonzales was supposed to start for the north in the Texas League All-Star game Tuesday night in Little Rock.
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