Ah yes, thank you for the chance to both revisit this late-summer gem and for the opportunity for a 'teachable moment'. You see Fairweather, the humor in the post derives from what we call a 'play on words'. The word 'stroke' carries a double meaning here, taking on its usages both to hit a baseball and to denote a cerebrovascular accident. The wordplay here takes on a playfully sardonic dimension when considered in the context of the Mariners' continued mismanagement and epic suckitude under Wedge, who as it seems, was more interested in sucking on chili dogs and Kools during his tenure than bringing this ragged shitstain of a franchise close to something remotely resembling .500. I hope that helps.
Leftylib compassion for fellow human being. Now I get it! It will be also much funny when the cigarette-smoking shistain suckituder in the White House who is presently resemble .360 strokes out in similar way. I will make satire and irony then because stroke is also golf 240 times to be lazy and stroke is also ego which is him. This will be triple irony wordplay and you will laugh too surely.