Joseph Jason Putz (/ˈpʊts/; born February 22, 1977) is an American former professional baseball relief pitcher.

He played in Major League Baseball (MLB) for the Seattle Mariners, New York Mets, Chicago White Sox and Arizona Diamondbacks.

All through the minors, Putz had been able to throw an excellent fastball that topped out at 97 miles per hour, but had been only marginally successful because his only other pitch was a below average slider.

On July 6, 2007, he was named the June 2007 winner of the "DHL Presents the Major League Baseball Delivery Man of the Month Award", recognizing the top relief pitcher for the month and on September 25, 2007, Putz was named as one of 10 finalists for the "DHL Presents the Major League Baseball Delivery Man of the Year Award."

On December 10, 2008, Putz was part of a three-team, twelve-player trade that sent him to the New York Mets in exchange for pitcher Aaron Heilman, utility outfielder Endy Chávez, and prospects.

[2] After a disappointing 2009 season, on November 6, the Mets declined to exercise Putz's 2010 team option, thus making him a free agent.

[3] On December 11, 2009, Putz signed a one-year contract with the Chicago White Sox worth $3 million.

[4] On July 20, 2010, Putz set a Chicago White Sox franchise record by pitching 25 consecutive scoreless outings.