He played in Major League Baseball for the Seattle Mariners, Texas Rangers, and Toronto Blue Jays.

Feierabend was selected in the third round (86th overall) by the Mariners in the 2003 Major League Baseball draft out of Midview High School in Grafton, Ohio.

He threw six scoreless innings over his first two major league appearances before making his first start on September 24 against the Chicago White Sox, where he picked up a loss.

He was recalled on July 24 and started game one of a doubleheader at Texas recording the loss allowing two runs on six hits in five innings.

On August 17, he was recalled to Seattle and recorded the loss in season debut against the Minnesota Twins, allowing six runs on ten hits in three innings.

In 28 games (23 starts) for the Triple–A Lehigh Valley IronPigs in 2011, he compiled a 10–8 record and 5.39 ERA with 92 strikeouts across 132 innings pitched.

[4] Feierabend pitched for the York Revolution of the independent Atlantic League of Professional Baseball starting in April 2012.

Feierabend was signed to a minor league contract by the Texas Rangers on January 15, 2013, that included an invitation to spring training.

In 29 games (21 starts) split between the Double–A Frisco RoughRiders and Triple–A Round Rock Express, he accumulated a 7–7 record and 3.70 ERA with 101 strikeouts across 148+1⁄3 innings pitched.

[7] On December 3, 2014, he signed a one-year, $270,000 (USD) deal to play for the Nexen Heroes of the KBO League.

[10] That same day, he pitched the Blue Jays' only complete game of the season in a 4–1 loss to the Chicago White Sox.

[14] On June 26, 2020, the Lions announced that the organization and Feierabend would officially part ways effective July 1, as he wished to be with his family during the COVID-19 pandemic and didn't agree to the terms of a proposed contract extension.