The Detroit Lions are releasing P Jeff Locke on Tuesday, according to Dave Birkett, as Sam Martin is set to return for their game against the Steelers. Locke, 28, if a former fifth-round pick by the Vikings in the 2013 NFL Draft. He finished his four-year rookie contract with Minnesota and reportedly had several teams interested in him this offseason. The Colts signed Lock to a two-year, $3.45 million deal with $1.25 million in guaranteed this past March.