Did you know these movie and TV characters were also MLB fans?

Baseball is a great sport, right? It's probably (it better be) your favorite. In fact, baseball's appeal is so strong that it even reaches through the boundaries of reality. Many fictional characters cheer for your favorite teams, from the obvious to the obscure. Want to know who your favorite superhero/private detective/apocalypse survivor cheers for? You're in luck.
AL East
You already knew that we were going to talk about "Seinfeld," so let's just do it now. George works for the Yankees, so we know he at least likes the team, but it's his dad who's the most passionate. After all, only a real fan would quibble with George Steinbrenner about a trade, even after The Boss delivered some bad news:

Of course, the Costanzas aren't the only passionate fans on the show. We all know Elaine is ride or die for the Orioles. But she's not the biggest fictional Birds fan - that title goes to Todd from "The Last Man on Earth." Even when civilization has ended, he's still repping his favorite team:

The most passionate fictional Red Sox fan is Ben from "Fever Pitch," but did you know that Chandler from "Friends" is a Blue Jays fan? At least that's what this cap in his office would suggest:

Of course, this was never a plot point on the show (unless there's a secret episode called "The One with Where Chandler Steals Joe Carter's Hat). In fact, Chandler doesn't even seem to like baseball very much. But Matthew Perry does. Perry grew up in Ottawa, so it's no surprise that he'd sneak a Jays cap onto the set.
But when it comes to real-life baseball influencing the events of a fictional universe, look no further than a certain mysterious island. If you've JUST started "Lost" on Netflix and don't want spoilers for a show that's been over for six years, you might want to skip this part.
First of all, Jack's dad frequently used the phrase, "That's why the Boston Red Sox will never win the World Series," and Jack's same use of that phrase clued Sawyer into the fact that he might have known Jack's father. But that's not all -- Oceanic flight 815 crashed on Sept. 22, 2004. As you surely remember, it turns out the Sox did win the World Series that year, and Ben Linus successfully used that information to convince Jack he had contact with the outside world:

Jack's reaction is maybe a little less enthused than Jimmy Fallon's. 
AL Central
Question: What's Superman's favorite baseball team? This is not a joke - we're about to tell you. According to the 2013 film "Man of Steel," it's the Royals:  

Why is movie Clark Kent a fan of the Royals, and not the Metropolis Monarchs (like he is in the comics)?. As the film's costume designer, Michael Wilkinson, told Fashonista.com:
Zack [Snyder] wanted to add in a few references to his home state, so he wears a University of Kansas t-shirt and a Royals t-shirt.
Shh, no one tell them that the Royals play in Missouri.
When it comes to the Twins, their biggest fictional fan happens to be their smallest fictional owner: 

Magnum, P.I. loves the Tigers, even if he doesn't recognize Alan Trammel and Lou Whittaker when he runs into them in a bar. And Doughboy from "Boyz 'N the Hood" seems to like the Motor City Kitties quite a bit as well.
The White Sox can count Kim (played by Cameron Diaz) in "My Best Friend's Wedding" among their fans. Well, we hope Kim's a fan -- in the movie, her dad owns the team.
Finally, the Indians have a very passionate fan in Ted Mosby from "How I Met Your Mother." He's completely baffled when none of his friends know who "beloved Indians middle reliever" Vinnie Pestano is. Ted is from Ohio, but so is Josh Radnor, the actor who plays him -- he grew up in Cleveland. 
AL West
Now, we're not sure that Frank Drebin from "The Naked Gun" is an Angels fan, but based on his, shall we say, favorable undercover officiating of the team, it seems pretty likely:

Poor Mariners. They have no one to stand up for them in that movie. Luckily, they have the support of Ernie from "Harry and the Hendersons," who is definitely wearing an upside-down trident M's cap, just before he and his family find Harry:

It's not just set dressing to show that the movie is set in the Pacific Northwest, either. Ernie is a real baseball fan, as proven by this exchange: 
Ernie: Hey, Dad.
George: Yeah?
Ernie: Do you think I could get a pair of real Major League baseball cleats when we get back?
George: You bet.
Ernie: Great. I'm gonna spike Frankie McDowell.
Nancy: Oh no you're not.
George: Listen to your mom, Ern.
Ernie: But he spiked me twice.
George: Well that's different. You go right ahead then.
Nancy: George!
George: Nan, you don't understand these things. It's just smart baseball.
George Henderson probably taught Harry all about baseball's unwritten rules. Too bad he never took him to an actual game -- we would have loved to see an Edgar Martinez cameo in "Harry and the Hendersons Go to the Kingdome." 
When it comes to fictional Astros fans, we're going with Mason and his dad from Richard Linklater's Academy-Award winning "Boyhood." Not only are they fans, they're also good luck charms for the team. The footage in the film comes from two separate actual games, and then-Astros-outfielder, once-Padres-pitcher, now-Brewers-hitting-coach Jason Lane homered in both of them.
NL East
Perhaps no one loves the Phillies as much as Mac from "It's Always Sunny in Philadelphia." But we also know that the eponymous Goldbergs are big fans:

Joan Watson of "Elementary" loves her Mets so much, she tries to convince Sherlock to love them too. It's too bad she and Mitch from "City Slickers" don't exist in the same fictional universe -- then they could go to games together.
Luckily, Marlins fans always have a fictional buddy to take to the park. After six seasons of fighting crime in Kentucky, he went back to the U.S. Marshal's office in Miami:  

Honorable mention: This apparent time-traveling Nationals fan in "Karate Kid."
NL Central
Sure, we all know Ferris Bueller is a big Cubs fan. He skips school to see a game! But he's not the only '80s movie hero who loves the Cubbies. So does someone in "The Princess Bride." (Hint: It's not Buttercup or Inigo Montoya.)

We think Joe Maddon should use this information to make his team dress like characters from this movie for their next road trip.  
The Cardinals have a strong candidate for best fictional fan -- Tony Micelli in "Who's the Boss," On the show, he was a retired Redbirds second baseman: 

The Pirates may have the most adorable fictional fan of all -- Bridget White, a little girl in the original 1951 version of "Angels in the Outfield," who called an actual squad of celestial beings in to help her team win.
The Reds also have a spunky young fan -- American Girl Doll Kit Kittredge.

Kit, whose adventures take place in 1930s Cincinnati, loves Ernie Lombardi because he's a catcher, just like her. There's even a movie version of Kit Kittredge, starring Abigail Breslin, but there's no baseball action in the film. 
NL West
Mike Baxter and his family on "Last Man Standing" skip school to go to Rockies Opening Day, but they're not the most dedicated NL West fans here. Well, eventual NL West. In an episode of "MAS*H" called "A War For All Seasons," Cpl. Klinger and Col. Potter make a bet on the 1951 World Series. Klinger chooses the Dodgers, Potter the Giants. Eventually they draw the whole unit into their rivalry. And you know how that turned out:

But the fan in this section we think is the most committed is Steve Rogers, Captain America himself. Don't try to trick him using the Dodgers - he knows his team so well, he'll figure out something is wrong right away: