Hey Retro,
Acording to Wikipedia
"It is written in the Baseball Hall of Fame that "During one particularly warm and humid day when Manhattan College was playing a semi-pro baseball team called the Metropolitans, Brother Jasper noticed the Manhattan students were becoming restless and edgy as Manhattan came to bat in the seventh inning of a close game. To relieve the tension, Brother Jasper called time-out and told the students to stand up and stretch for a few minutes until the game resumed." On the college's 150th anniversary in 2003 at a New York Yankees game, Brother Jasper was credited with the Seventh-inning stretch.
Since the College annually played the New York Giants in the late 1880's and into the 1890's at the Polo Grounds, the Manhattan College practice of the “seventh inning stretch" spread into the major leagues, where it has now become a time-honored custom practiced by trillions of fans annually"
Now you know what the hell a Jasper is and the true history of the 7th inning stretch.
Just here to help.
dasher