Heasley is listed as the starting pitcher for Friday's game against Seattle.
The right-hander's contract was selected from Double-A Northwest Arkansas on Friday and he immediately became the obvious choice to toe the rubber for the series opener against Seattle. With Heasley now penciled in on the lineup card, he's officially slated to make his major-league debut. He posted a 3.33 ERA, 1.23 WHIP and 120 K:BB across 105.1 Double-A innings.