Home runs are going through the roof, and theories abound

ST. PETERSBURG, Fla. - There are many competing theories as to why baseball was on track Tuesday to set an all-time single season record for home runs.

"Obviously guys are throwing harder," Cubs third baseman Kris Bryant said.

"Obviously the balls are a little corked up," first baseman Anthony Rizzo countered.

Obviously no one is sure exactly why it has happened.

But the fact is MLB was 17 home runs shy of the record entering Tuesday before Alex Gordon hit the 5,694th homer of the season to break the 2000 mark set at the height of the Steroids Era.