(Seattle, WA)  --  The Seattle Mariners will begin a three-game series against Arizona tonight, after winning two of three from Toronto.  The M's defeated the Blue Jays yesterday, 6-5, on a walk-off home run in the tenth inning by Franklin Gutierrez.  Austin Jackson and Nelson Cruz also homered for Seattle.  The Mariners and Diamondbacks will get going tonight at 7:10 p.m. at Safeco Field.