Three Changes That Explain the Red Sox’s Run

As of June 18, the Boston Red Sox had a 5.6% chance of making the playoffs. Then, heading into their June 25 game, the Red Sox had a record of 32 wins and 46 losses
At that point, they were one of only 473 teams in Major League Baseball history with a record at least that poor after 78 games; none of those nearly 500 teams had ever made it to the postseason.
However, heading into yesterday's (Sunday's) game, the Red Sox's chances of making the playoffs had risen to 66.9% thanks to a thirteen-gam