He had a good season in 1910 with an independent minor league team in Cheyenne, Wyoming, with a record of 17 wins and four losses with 208 strikeouts.

Hendrix helped clinch the league title on August 24 winning the first game of a doubleheader against the Brooklyn Robins.

Baker allowed the baseball season to continue until September, after which, players like Hendrix had to begin working toward the war effort.

[9] Toward the end of the 1920 season, Hendrix, who had a record of 9-12 with a 3.58 ERA, was scheduled to start on August 31 against the Philadelphia Phillies, who were in last place.

With a grand jury investigating the Black Sox scandal in the 1919 World Series, the media paid great attention to rumors of potential game fixing.

Immediately after the grand jury indicted the Black Sox, The New York Times reported that American League president Ban Johnson had obtained evidence against Hendrix regarding the Philadelphia game.

"Frock" Thompson (which was misprinted as "Frog" by The New York Times) saying "Bet $5,000 on opposition" and claimed to recall that Hendrix had sent the telegram.

[13] The next day, Hendrix told reporters that he would no longer pitch in the majors, but would continue his career in semi-pro baseball back in the Midwest.

[14] Cubs owner Bill Veeck stated that Hendrix's release had nothing to do with the allegations but was moving away from older veterans.

In 1924, Commissioner Kenesaw Mountain Landis communicated that Hendrix was free to play baseball after fans of other teams called him an "outlaw".