Rainer Martens has been playing softball for 45 years. He is a stand-out player and coach for the Florida Legends, the most decorated senior softball team in the United States with over 80 National Championships. In 18 national tournaments, Martens-coached teams have won 16 national championships and placed second in the other two. His passion and achievements in softball were rewarded when he was inducted into the National Senior Softball Hall of Fame in 2009.

Rainer Martens has written 16 books and hundreds of articles. His book Successful Coaching has sold over 1 million copies, and it is the top-selling coaching book of all time.

Julie Martens is the team manager, scorekeeper, and statistician for the Florida Legends senior softball team. Through her years of playing women's and coed slowpitch softball and as team manager, she's developed an exceptional knowledge of the sport.

Rainer and Julie Martens both received PhDs in sport psychology from the University of Illinois. They have been married since 1992 and reside in Ormond Beach, Florida. In addition to watching, playing, and traveling for softball, they enjoy biking and photography in their spare time.