MMA, mixed martial arts, is a relatively new form of professionalsports that has experienced steadily increasing popularity over the pastfew decades. These graphics-rich titles offer stirring descriptions andlively action photos that aptly convey the intensity of these matches.MMA Heroic History explains how fights featuring two opponentsthat allow just about anything except biting and eye-gouging go backto ancient Greece and traces how schools of manual combat evolvedaround the world. MMA Ferocious Fighting Styles reviews the most common arts (boxing, wrestling, Brazilian Ju-Jitsu, kickboxing) andtheir strategic uses. MMA Lasting Legends profiles superstars of thesport, past and present, along with rising newcomers. MME FemaleFighters profiles women competitors (and it’s notable that women areroutinely included throughout the series). The writing in all four booksis straightforward and authoritative, and the volumes share the sameformat: brief, photo-filled chapters; numerous subheadings, insets,and fact boxes; and title-specific timelines, glossaries, and QR-codebibliographies. There is some repetition across the titles (MMA vocabulary, how winners are determined, occasional images) and somebooks’ timeliness could be better (MMA Ferocious Fighting Styles is current through about 2020 and MMA Heroic History through 2019).That said, fans won’t care. There’s a dearth of material on this topic forthis age group, and the attention-grabbing covers are sure to please.