Rodriguez put on 25 pounds of muscle between his sophomore and junior years, and word was that his connection was a dog kennel owner.
A former high school teammate told Roberts the future No.1 MLB draft pick was on steroids and his coach knew it.
Another student said the son of coach Rich Hofman admitted he saw Rodriguez use steroids.
Hofman said it was news to him. "Whatever he was doing, he was doing it somewhere else," he said.
[Roberts] reveals fellow Bombers nicknamed the third baseman "B---h T--s" in 2005.
That was after he put on 15 pounds in the off-season and seemed to develop round pectorals, a condition called gynecomastia that can be caused by anabolic steroids, she writes.
But perhaps most troubling to baseball purists and anyone whose called him a teammate is this little gem.
In one shocking disclosure, the book accuses A-Rod of "pitch tipping" when he was with the Rangers - letting a friendly opponent at the plate know which pitch was coming in lopsided games.
Rodriguez expected players he helped would do the same for him when he was having an off night and needed to get his batting average up and it wouldn't affect the outcome of the game.
Roberts' book comes out May 12.