I don't think anybody is calling May "lucky" solely because they won. Despite ho-hum statistics for getting on base and hitting with power, they were scoring runs at about a league-high pace. To a lesser extent, despite so-so numbers on the other side of the ball, the team was preventing other runners from scoring. On top of that, with the actual runs for and against that they racked up, they were winning more frequently than their pythag computation would suggest. Going from memory on all this, but it was a perfect storm of timely hitting and stranding of runners and then winning close ones (remember how perfect Perk was?), and you can't take it away from them (it was FUN!), but for forecasting purposes it was easy to guess the winning would not continue unless the underlying numbers got better, and people were saying so. I don't remember looking too deeply at the bad streak July-August, but my recollection is they earned it the old fashioned way, by not hitting and not getting the other guys out. Season-long, they finished 12th in the league for slugging average and dead last for on-base percentage, a combination that should be deadly, yet they scored the 8th most runs. Similarly, the pitching staff was 9th best in on-base pct, 11th in slugging, and yet held up for 9th in preventing runs. Even with all this, they scored fewer runs than they gave up, which won't usually lead to a winning record, yet it did. The May numbers contributed greatly to this overall disparity. And that's why I'm worried about a 78 win season. The underlying hitting numbers could improve and likewise for pitching/defense and yet not show up in the standings, and there's room even for the wins to decline a little. Unsustainable would have been a better word than lucky.