Keuchel, who also won the award in April and May, became the first pitcher in Astros history to win the honor three times in the same season.
No one had accomplished the feat since Jake Peavy did it with the Padres in 2007, and no AL pitcher had done it since then-Twins ace Johan Santana in '04. Both pitchers went on to win the Cy Young Award.
And Keuchel is putting together a fantastic season, establishing himself as one of the front-runners to win his first AL Cy Young Award. At the start of play Wednesday, he led the AL in wins (16), was second in ERA (2.