Gr 2-4Mike and his telepathic dog, Harry, return for their third adventure following The Dog That Stole Football Plays (1980) and The Dog That Called the Signals (1982, both Little). Mike, the less-than-stellar pitcher for the Grand Avenue Giants, gets special help from Harry, who can spot each batter's weakness and advise Mike on the best pitches to throw. Unfortunately, Mike's arm isn't always up to Harry's coaching, and when the Giants face the Peach Street Mudders, Harry decides a new tactic is in order. Enlivened by plentiful pen-and-ink sketches, this is basically just one incident which has been stretched into a short book, and therefore there is very little plot to de velop. There is, however, plenty of hu mor, and Christopher's fans will greet his latest offering with enthusiasm. Kathleen Brachmann, Highland Park Public Library, Ill.