This the the first biography ever written on Marvin Hart, the forgotten heavyweight champion from the South. Hart gained popularity as a middleweight and light-heavyweight in the Louisville, Kentucky area before moving up to heavyweight and defeating the highly touted top contender Jack Johnson. Hart then won the vacant world's heavyweight championship in a fight to the finish against Jack Root. Like other books in Pollack's "In the Ring" series, this book is meticulously researched using next-day local primary source materials, and details Hart's boxing career.