(Seattle, WA)  --  The Mariners are hoping free-agent pitcher Hisashi Iwakuma will remain in Seattle.  The team has extended Iwakuma a 15-point-eight-million-dollar qualifying offer for a year, which he has until Friday to accept of reject.  CBSSports.com reports if Iwakuma rejects the offer, Mariners general manager Jerry Dipoto will offer him a two-year deal "on top of" the qualifying offer.  If Iwakuma signs with another club, the Mariners will get that team's top draft pick if it's outside the top ten.