John Patrick "Jack" Perconte (born August 31, 1954 in Joliet, IL) is a former professional baseball second baseman. Jack played in Major League Baseball (MLB) from 1980 to 1986.

At the age of 26, on September 13, 1980, he made his MLB debut with the Los Angeles Dodgers. His most productive seasons were with the Seattle Mariners during which he hit a combined .281 and stole 60 bases in 68 attempts.

In addition to his MLB career, Perconte has authored three books - "Creating a Season to Remember: The New Youth Sports Coaching Leadership Handbook", "The Making of a Hitter- A Proven and Practical Step-by-Step Baseball Guide" and "Raising an Athlete- How to Instill Confidence, Build Skills and Inspire a Love of Sport". Jack turned to writing to further help athletes and parents have enjoyable baseball and sports’ experiences. Jack’s website gives advice on baseball. coaching and parenting. He has been a featured writer for Baseball the Magazine for 10 years.

Jack has run 11 marathons and continues to teach youth baseball and softball. His uncle, Frank Perconte, was a soldier of Easy Company, 506th Parachute Infantry Regiment, 101st Airborne Division during the Second World War, and is portrayed in Band of Brothers.

(excerpted from Baseball Almanac, BR Bullpen & Wikipedia)