After debuting at #1 on the adult frontlist nonfiction bestseller list, Joe Posnanski's Paterno has slipped to #7 in its second week, according to Nielsen BookScan. The biography sold 11,439 copies in its first week but dropped 42% to 6,623 copies this week. Last week, it was ranked around #150 on Amazon's bestseller list (though it was around #30 around its pub date), and as of September 5, the book is holding steady at #162.