As fans of Serena Williams and Kentucky basketball know all too well, the dreaded curse of Drake is all too real.

And now it seems another mega-famous singer has been hexing the sports world. That would be one Taylor Alison Swift. Perhaps you've heard of her?

The pop star has been filling stadiums all over the country over the past several months with her wildly successful "1989" tour. And while her famous guests and performers have gotten most of the headlines, it turns out there's something more sinister really going on. Just ask the Houston Astros. Or the Washington Nationals. Or the San Diego Padres.

Let's investigate, shall we?

On July 27, the Astros changed Swift's scheduled concert date from Oct. 13 to Sept. 9, in case the team had a home playoff game. At the time, Houston was 55-45 and held the first wild-card spot. By the night of her rescheduled show at Minute Maid Park, the Astros led the AL West by two games over the Rangers. Things were looking pretty good for the Astros.

But not anymore. Houston has turned in a lackluster 8-11 record since her concert -- including losing seven of the eight games immediately after -- and would barely make the playoffs if the postseason started today.

When was the last time the Astros missed the postseason after being at least 10 games over .500 at the halfway point of the season? In 1989. Coincidence? I THINK NOT.

But there's more. During the Nationals game in July, just days after two nights of "1989," the lights went out at Nationals Park and play was suspended. On Twitter, Max Scherzer jokingly blamed Swift for the mishap. He's probably regretting that now. At the time, the Nats were leading the NL East, and since then the team has had an epic collapse -- compiling a 32-39 record and being eliminated from the postseason.

If that's not enough proof for you, the eliminated Padres have gone 11-18 since Swift's Aug. 29 performance at Petco Park.

And her 2015 season curse might not be over just yet. Swift will be performing at the Rogers Centre in Toronto this weekend. While the Blue Jays have already clinched a playoff spot, it seems her presence -- combined with Toronto being Drake's hometown team -- might doom their postseason chances.

*Team records updated through noon ET on Thursday, October 1st.

Thanks to Mackenzie Kraemer and ESPN's incredible Stats & Information group for compiling this data.

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