Heading into the final weeks of the MLB season, about half of the division races are all but wrapped up. The Houston Astros, Toronto Blue Jays and St. Louis Cardinals are the three division leaders with a sub-five-game lead.

In this slideshow, we’ll discuss each division leader’s biggest concern for either the rest of the season, or the postseason. Even if its lead is seemingly infallible, each team has a concern moving forward.

Be sure to leave your thoughts on each division leader’s biggest concern in the comments section.

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