It may have been mentioned before and I missed it, but according to this writer . . .

"Tankersley, who hit her 22nd homer of the season, became the first player to hit a ball into the new 34-foot tall outfield bleachers at Hall of Fame Stadium. She reached for a pitch tailing away on the outside part of the plate and drove it into the front row of the stands."

Nice to be 1st at anything, here is the LINK