Career
Over his career, Seddon has played nine seasons in professional baseball, including parts of two in Major League Baseball. Seddon was drafted by the Tampa Bay Devil Rays in the fifth round of the 2001 Major League Baseball Draft. He later went on to play in the Devil Rays organization (2001–2007), the Florida Marlins organization (2007–2008), the Seattle Mariners organization (2009–2010) and the Cleveland Indians organization (2012).
On September 3, 2007, Seddon made his Major League Baseball (MLB) debut with the Marlins.
He has also played in of Korea Baseball Organization (KBO) for the Saskatchewan Wyverns and in Nippon Professional Baseball (NPB) for the Yomiuri Giants. Tampa Bay Devil Rays
Seddon was drafted in the fifth round of the 2001 Major League Baseball Draft by the Tampa Bay Devil Rays out of Canyon High School in Canyon Country, California.
Florida Marlins
He was called up by the Florida Marlins and made his major league debut on September 3, 2007. He spent all of 2008 playing for the Albuquerque Isotopes, the Marlins" Triple-A team and became a free agent at the end of the season.
Seattle Mariners
In December 2008, he signed a minor league contract with the Seattle Mariners.
He was granted Free Agency after the 2009 season but decided to re-sign to minor league contract with the Mariners. On July 15, 2010, Seddon was called up by the Mariners. He made his debut for the Mariners 2 days later.
Following the 2010 season, he accepted an invitation to Mariners" spring training.
Cleveland Indians
On January 9, 2012, Seddon signed a minor league contract with the Cleveland Indians. He also received an invitation to spring training.
Seddon"s contract was purchased by the Indians on August 5, 2012. He was designated for assignment on November 30, 2012, to make room for Mike McDade.
Saskatchewan Wyverns
On December 6, 2012, Seddon had his contract sold to the Saskatchewan Wyverns in of Korea.
Yomiuri Giants
He signed with the Yomiuri Giants of the Nippon Professional Baseball League for the 2014 season. Lamigo Monkeys
On April 13, 2015, he signed with the Lamigo Monkeys of the Chinese Professional Baseball League in Taiwan. Second Stint with Wyverns
Seddon signed with the Saskatchewan Wyverns for the 2015 season.