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3 Keys to the Arizona Diamondbacks September Collapse

By Casey Pazzalia

HOUSTON, TX - SEPTEMBER 16: Ketel Marte #4 of the Arizona Diamondbacks can't make the catch on a pop fly by Carlos Correa #1 of the Houston Astros in the eighth inning at Minute Maid Park on September 16, 2018 in Houston, Texas. (Photo by Bob Levey/Getty Images)
HOUSTON, TX - SEPTEMBER 16: Ketel Marte #4 of the Arizona Diamondbacks can't make the catch on a pop fly by Carlos Correa #1 of the Houston Astros in the eighth inning at Minute Maid Park on September 16, 2018 in Houston, Texas. (Photo by Bob Levey/Getty Images) /
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PHOENIX, AZ – SEPTEMBER 09: Brad Boxberger #31 of the Arizona Diamondbacks pitches against the Atlanta Braves during the ninth inning of an MLB game at Chase Field on September 9, 2018 in Phoenix, Arizona. (Photo by Ralph Freso/Getty Images)
PHOENIX, AZ – SEPTEMBER 09: Brad Boxberger #31 of the Arizona Diamondbacks pitches against the Atlanta Braves during the ninth inning of an MLB game at Chase Field on September 9, 2018 in Phoenix, Arizona. (Photo by Ralph Freso/Getty Images) /

(#2) Bullpen Troubles

Recently, Heat Waved reported on the disastrous September that Brad Boxberger has had. Boxberger, a former All-Star who was very reliable up until September, has an 18.90 ERA since the end of August while allowing opposing hitters to hit .438 against him. He’s also walked as many batters this month (5) as he did in August, except in September he did it in five fewer innings.

Unfortunately, he’s not the only arm out of the bullpen that’s struggled for the Arizona Diamondbacks. Besides Brad Boxberger, several other have made September their worst month of the season.

The normally dynamic Archie Bradley has struggled mightily this month, complete with season-worst marks in ERA (11.25) and BAA (.478).

Jake Diekman has also been atrocious this month, as has Matt Andriese. Like Bradley and Boxberger, both of their ERA’s and BAA’s are worse this month than any other month in 2018.

In addition to the four bullpen arms mentioned above, Andrew Chafin has a 9.82 ERA in eight September relief appearances.

Brad Ziegler is one of the few bullpen arms to flourish this month, posting a 0.00 ERA in eight appearances.

Arizona’s team ERA for September (5.63) is the worst of any month in 2018.

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