Zac Gallen’s complete-game shutout of the Cubs on September 8th ran away with it, polling 91% of the votes, with nobody else getting anything significant to speak of. It was a great performance in a number of ways. Let’s start off by simply being a complete-game shutout, the first by a D-backs in over two years, since the no-hitter thrown by future ex-Dback Tyler Gilbert. Before that, you have to go back more than a further three seasons to find the previous nine-inning zero. That was posted by Patrick Corbin in April 2018. That’s means the last three CGSO’s by a D-back have all won this award.