FRIDAY: The Mariners made a formal offer to the Rockies for Stubbs earlier this week, according to Nick Groke of the Denver Post. Groke, like Morosi and Harding, hears that the Rockies aren’t actively looking to deal Stubbs.

THURSDAY, 9:41pm: There are no talks ongoing regarding Stubbs, Harding reports, but sources tell him that increased activity on the outfielder could occur over the coming week.

7:02pm: The Mariners have inquired with the Rockies about the possibility of acquiring outfielder Drew Stubbs, tweets Jon Morosi of FOX Sports. Colorado is willing to listen on Stubbs, tweets Thomas Harding of MLB.com, and would be interested in bringing back a controllable young arm in return.

Stubbs, 29, has played exclusively in center field with the Rockies, though he also has experience in right. He has posted a career-best .297/.335/.498 slash with ten home runs an 11 stolen bases in 258 plate appearances. That comes on the heels of three straight seasons of below-average production with the Reds and Indians, however, which led to his being dealt to the Rockies from the latter club in exchange for southpaw reliever Josh Outman.

The right-handed hitting Stubbs is earning $4.1MM through arbitration this year and should be in line for a nice raise in 2015, his final season of arb eligibility. That contract situation limits his trade value, of course. Colorado is not yet sure if they would like to part with Stubbs, Morosi adds. Of course, he is part of a fairly crowded outfield situation at present, particularly given reports that the club would like to bring back veteran Michael Cuddyer.