Inside MLB profiles each of the 30 franchises in Major League Baseball. Seattle Mariners is a beginner's history of the Mariners, covering the beginnings of the franchise, the greatest and lowest moments of the team, and the best players and managers. Fun facts, anecdotes, and sidebars round out the story of each club, allowing your readers to get Inside MLB Aligned to Common Core Standards and correlated to state standards. SportsZone is an imprint of Abdo Publishing, a division of ABDO.