"Lupica kicks off a new series starring a pair of 8-year-old twins who solve sports-themed mysteries.... Along with plenty of suspenseful sports action, the author highlights in both tales the values of fair play, teamwork, and doing the 'right thing.'...the supporting cast shows some racial and ethnic diversity. Wholesome, uncomplicated fare for the younger Matt Christopher crowd." (Kirkus Reviews)

"Mike Lupica is bringing his sports knowledge and excellent writing ability to the chapter book world.... [Zach and Zoe] have exciting playoff games, supportive parents, and act true to their ages...there is no evil involved in the mysteries, and the community is supportive. It is evident early on who or what is behind the mysteries, but this should be a positive for youngsters who are just getting started with guessing the outcomes of chapter books." (School Library Connection) 

"Zach and Zoe are likable and kind to each other, and their parents are supportive. Lupica knows how to write sports action with a heart.... Give these to young readers who are looking for easy sports fiction or who are new to the mystery genre." (School Library Journal)