Nearly everyone can sing along to "Take Me Out to the Ballgame," but almost no one knows that the lyrics are sung in the voice of a woman.

In the song's virtually unknown first verse, baseball-mad Katie Casey belts out the demand that thousands of baseball fans sing on their feet every game during the seventh-inning stretch:

Katie Casey was baseball mad
Had the fever and had it bad
Just to root for the hometown crew
Ev'ry sou Katie blew
On a Saturday, her young beau
Called to see if she'd like to go
To see a show but Miss Kate said
"No, I'll tell you what you can do"

"Take me out to the ball game
Take me out with the crowd ..."

Women have belonged in baseball, whether as players or spectators, since long before "Take Me Out to the Ballgame" was written in 1908. But 110 years later, Major League Baseball is still an old-fashioned boys club. They might as well hang a sign on their door: No girls allowed.

Until MLB stops belittling female fans and athletes, that door will stay shut. This is a shame. Women love baseball — some 45 percent of fans were women when surveyed by the league back in 2010. The number is likely even higher now. They deserve to have the sport love them back.

MLB's antipathy toward women began in the earliest days of the league, when baseball was considered too rough for ladies to attend. At the turn of the 20th century, as there were rumblings that the non-contact sport was perhaps a little "feminine," players and fans doubled down on reinforcing its masculinity, comparing it to battle. A.G. Spaulding, the author of a seminal history of the sport, America's National Game, went as far as to declare: "Baseball is war! … The founder of our National Game became a Major General in the United States Army!"

The legacy of those decades of "manning up" baseball is echoed in the infantalizing treatment of women in the sport today.

Recent giveaways targeting women have ranged from feather boas to a World Series replica ring that was advertised by the Cardinals with this line: "You love baseball, she loves jewelry ... it's a win-win." Mother's Day giveaways have included a leopard print White Sox tote bag and a "cosmetic bag" (Father's Day promotions are typically along the lines of a spatula for the grillbooyah).

"Sometimes it really feels like Major League Baseball believes its female fans consist solely of baseball knowledge-impaired, wine-drinking moms dressed in pink," observes author Stacey May Fowles in her book, Baseball Life Advice. The giveaways promote the myth that women aren't interested in watching baseball for the sake of the game itself — they are going in order to take their sons, to drink distractedly with the girls, or in reluctant attendance with a boyfriend or husband.

MLB's disregard for the women in the stands extends to its treatment of alleged domestic abusers in the game. Although MLB took the step several years ago of introducing punishments for ballplayers regardless of a legal conviction, many — Aroldis Chapman, Jose Reyes, and this year, Roberto Osuna — are also given a "second chance" by being traded to play on contending teams. The teams who snap up alleged domestic abusers are rewarded, getting the disgraced players at discounts.

Although this is not unique to only baseball — the NFL has a particularly chilling problem with silencing domestic violence victims — MLB really does seem to circle the wagons to protect their own when such allegations come out. Astros ace Justin Verlander, who has been an outspoken advocate for victims, was uncharacteristically muted when asked about playing alongside Osuna, offering: "We don't know the whole story." Kevin Jukkola, an Astros fan who protested his team's purchase of Osuna recently by holding up a sign featuring the Houston domestic violence hotline, was removed from the park.

The sports media does not get a pass in its perpetuation of the boys club of baseball, either. Coverage of women fans in MLB ballparks is often sexist; in one notable case from 2015, Fox Sports broadcasters spent several minutes mocking a group of sorority girls taking selfies in the stands of an Arizona Diamondbacks game. "How about if we send [the Diamondbacks' mascot] out there and he just collects all the phones," one announcer said. "You're not getting them back till the end of the game."

While intended in jest, the comments emphasize that women are still not welcome in ballparks unless they enjoy the game the right way (just ask any woman who's been subjected to proving her baseball knowledge by a disbelieving male fan), as well as the patronizing language of taking female fans' phones away, as if the women are children in need of a scolding by a parent.

On the field, MLB has done the bare minimum to support women's professional baseball; the league does not, for example, financially back a women's league the way that the National Basketball Association supports the WNBA. On a global level, "Major League Baseball's only contribution to international women's baseball has been to forbid the women to use the title 'Women's World Series' for their tournament," writes Jennifer Ring in Stolen Bases: Why American Girls Don't Play Baseball.

There has never been a woman major league umpire, a woman general manager, or a woman bench coach — jobs where any argument about "physicality" are moot. The Institute for Diversity and Ethics in Sport (TIDES) determined in 2017 that the league "went from a [grade of] 74.3 in gender hiring to 70 this year,” Fangraphs writes. MLB teams collectively scored "a D+ at the senior administrator level and a C- at the professional team administrator level" and "the league office received a C- for gender hiring practices, with women making up 29.3 percent of its workforce." While that might not seem terrible — hey, it's almost a third! — it means a pretty dry well for women coming up to managerial positions in the future.

That's a crucial detail because "this is an industry where relationships accrete over lifetimes and where you don't see a lot of front-office turnover," writes espnW. "So to integrate women into the talent pool of people making baseball decisions, you have to start at the beginning, where people start their careers." Yet there is little incentive for women to pursue careers in baseball in the first place; most girls interested in the sport are siphoned off to softball sometime after Little League. Just a tiny handful of women have ever received a college scholarship to play baseball.

Katie Casey, that fictional baseball fan we evoke every seventh inning, has been all but erased from the song. Perhaps we never would have forgotten that women belong at the heart of the sport if they had gotten their proper respect all along.