From BR Bullpen
James Patrick Horner
- Bats Right, Throws Right
- Height 6' 0", Weight 210 lb.
- School Washington State University
 Biographical Information
Catcher Jim Horner retired as a player after the 2004 season. He spent most of that season and the three preceding it as a catcher for the Tacoma Rainiers, usually as a back up for Pat Borders. Horner's minor league career spanned from 1996 to 2004 all in the Seattle Mariners chain. He coached the Everett AquaSox in 2005. In 2006, he became manager of the Wisconsin Timber Rattlers of the Midwest League. After two years at the helm there, he became skipper of the High Desert Mavericks. At the end of July, 2010, Horner left the Mavericks to become an assistant coach at Texas Tech University, citing family as a determining factor. After coaching Tech through 2012, Horner returned to High Desert as manager in 2013.
 Year-By-Year Minor League Managerial Record
|2006||Wisconsin Timber Rattlers||Midwest League||54-86||13th||Seattle Mariners|
|2007||Wisconsin Timber Rattlers||Midwest League||53-85||14th||Seattle Mariners|
|2008||High Desert Mavericks||California League||58-82||10th||Seattle Mariners|
|2009||High Desert Mavericks||California League||83-57||2nd||Seattle Mariners||Lost League Finals|
|2010||High Desert Mavericks||California League||53-43||--||Seattle Mariners||--||replaced by Darrin Garner July 31|
|2013||High Desert Mavericks||California League||64-76||8th||Seattle Mariners|
|2014||Jackson (TN) Generals||Southern League||63-76||7th||Seattle Mariners|
|2015||Jackson (TN) Generals||Southern League||53-84||10th||Seattle Mariners|