The past month has served as a reminder of how fast things can change in baseball, even at this point of the season.

Since the second half got underway on July 18 -- exactly one month ago Monday -- five of MLB’s six division races have shifted dramatically.

With help from FanGraphs’ division title odds , here’s a look at how each race has changed since the All-Star break ended.

All stats below, including odds, are through Sunday.

AL EAST

Biggest riser: Blue Jays, +42.5 (37.2% to 79.7%)

Biggest faller: Yankees, -30.4 (45.5% to 15.1%)

Before the break: The Yankees spent much of the first three months atop the AL East, but the division race began to shift in the second half of June, as the Bronx Bombers hit the skids. The Blue Jays pulled ahead of the Yankees on July 3 and went into

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