In honor of Barack Obama's Tweet -- and Opening Day -- here's every president since FDR pitching a baseball

Earlier today, leader of the free world -- and, more importantly, diehard White Sox fan -- Barack Obama tweeted this photo of himself celebrating Opening Day. We love everything about this picture, not least of all the dad jeans.

Admittedly, a killer fastball isn't a strict job requirement of the nation's highest office -- but maybe it should be. Who wouldn't rather watch an inter-party playoff game than an umpteenth primary debate? As the latest stage in our ongoing campaign to make Opening Day a national holiday, we present to you a photo of each of our presidents since FDR throwing a pitch ... some with better form than others. 

Franklin Delano Roosevelt

Harry S. Truman (The "S" stands for "strikeout.")

Dwight Eisenhower

John F. Kennedy

Lyndon Johnson

Richard Nixon

Gerald Ford

Jimmy Carter

Ronald Reagan (Fun facts: in his Hollywood days, Reagan starred as Hall of Fame pitcher Grover Cleveland Alexander in 1952's The Winning Team, and back in the 1930's, he announced Cubs games on the radio.)

George H. W. Bush

Bill Clinton

George W. Bush (You're no doubt aware that Dubya was a co-owner of the Texas Rangers, but did you know that he also instituted a T-ball league on the White House South Lawn?)

-- Molly Fitzpatrick / MLB.com

(Photos via Getty, U.S. News, Politico, The Telegraph)