Aguiar impressed Cincinnati president of baseball operations Nick Krall during the pitcher's first big-league camp, Jim Bowden of The Athletic reports. "He showed excellent poise in his first big-league camp and competes well," Krall said. "His stuff continues to improve and he has a chance to be a quality big-league pitcher in the near future."

Aguiar logged a 4.28 ERA, 1.28 WHIP and 61:13 K:BB in 54.2 innings across 11 starts for Double-A Chattanooga.