Who is the tallest baseball player in the USA?
Jon Rauch
On August 13, 2004, Rauch hit a home run against the Houston Astros off Roger Clemens, making him the tallest man ever to hit a home run in Major League Baseball. Despite a strong finish to the season in Montréal, Rauch was sent to the minors when the Expos moved to Washington. After putting up better numbers in the minors, Rauch finished the 2005 season with the Nationals, used mostly as a reliever, and going 2-4 with a 3.60 ERA.