Complex sentence: Jeffrey Stephen Mathis (born March 31,1983) is a Major League Baseball catcher for the Toronto Blue Jays and made his major league debut on August 12,2005 for the Los Angeles Angels of Anaheim.
Split into simpler sentences: Jeffrey Stephen Mathis (born March 31,1983) is an American professional baseball catcher for the Toronto Blue Jays of Major League Baseball. He made his major league debut on August 12,2005 for the Los Angeles Angels of Anaheim.