KANSAS CITY, Mo. – Don’t overlook reliever Danny Farquhar in the coming days when compiling the long list of what-ifs in the Seattle Mariners’ disappointing season. Oh, Farquhar isn’t at the top, certainly. There were bigger puzzles, such as Robinson Cano’s inexplicable six-week crash from late April to mid-June, a maddening lack of productivity with runners in scoring position and Fernando Rodney’s ruinous decline.