Editor’s Note: In this off-season series, SportsDay insider Gerry Fraley looks at the five best free agents at each position. New installments will come each weekday through mid-November:MIKE MOUSTAKAS2017 salary: $8.7 million.Breakdown: Has grown into left-handed power hitter. Set Kansas City record with 38 homers this season. Had 24 homers away from home park, which favors pitchers.