Mariners are a mess.
You know how there's FIP and ERA differential to account for luck and both numbers tend to align over time? I'm thinking winning a fuck ton of one-run games is like having a high FIP and low ERA. Kind of like UVA being doomed in March Madness after never slipping up during regular season despite what shoulda been obvious losses (Louisville) or in NCAAF how teams with high turnover margin (fumble bouncing right way etc) in one year tend to have worse record in following year