He played in Major League Baseball (MLB) for 4 seasons, with his longest tenure as a player coming with the Anaheim Angels.

After graduating from Dana Hills, Etherton enrolled at USC, where he was a Three-time All-American, and twice named the Pac-10 Conference Baseball Pitcher of the Year.

He played 4 seasons professionally as a pitcher in MLB, with Anaheim in 2000, the Cincinnati Reds in 2003, the Oakland Athletics in 2005, and Kansas City Royals in 2006.

Etherton played at Dana Hills High School and the University of Southern California.

He spent most of the season with the AAA Sacramento River Cats but made three starts for the Athletics when Rich Harden was injured in May.

In 2007, Etherton played for Kia Tigers in the Korea Baseball Organization and went 2–2 with a 4.22 ERA before being released.

[4] In December 2008, he signed a minor league contract with the Arizona Diamondbacks and played the entire season for the AAA Reno Aces, where he made 26 starts and was 11–8 with a 5.04 ERA.