Yesterday, I noted the way the D-backs pitchers had struggled on the road, with an era more than a run higher than at Chase Field. It got me looking at the park factors, and I was stunned to see Chase sitting 24th in the majors for home-run factor, by ESPN’s metric. [Other figures are available, but I like the way ESPN break things down] I mean, I expected the humidor to have had an impact since it was introduced before the 2018 season, but really? I know park factors are subject to fluctuation, so decided to take a look at a broader picture, covering the last decade.