While the Mariners recently looked to be clear sellers in this year’s trade market, the team’s recent eight-game winning streak and offensive explosion looks to have changed their position. Jon Heyman of CBS Sports reports that teams who have checked in on the Mariners have been told they’re not sellers at this time.
teams that have checked with #mariners  lately say they're not selling at all right now. cant really blame 'em.
— Jon Heyman (@JonHeymanCBS) July 24, 2013 
No team has scored more runs than the Mariners this month, which is an encouraging sign for a team whose rotation is fronted by Felix Hernandez and Hisashi Iwakuma. The Mariners have a number of veterans on one year deals, including Kendrys Morales, Mike Morse, Joe Saunders, Oliver Perez, Raul Ibanez and Jason Bay, many of whom were frequently mentioned as trade candidates.
Source: Steve Adams, MLB Trade Rumors