Gregory Rudolph Harts was a Major League Baseball

Major League Baseball

Major League Baseball is the highest level of professional baseball in the United States and Canada, consisting of teams that play in the National League and the American League...

 player who played for the New York Mets

New York Mets

The New York Mets are a professional baseball team based in the borough of Queens in New York City, New York. They belong to Major League Baseball's National League East Division. One of baseball's first expansion teams, the Mets were founded in 1962 to replace New York's departed National League...

 National League

National League

The National League of Professional Baseball Clubs, known simply as the National League , is the older of two leagues constituting Major League Baseball, and the world's oldest extant professional team sports league. Founded on February 2, 1876, to replace the National Association of Professional...

 champions in 1973. Harts was signed by the Mets as an amateur free agent in 1970. He made his Major League debut as a pinch hitter

Pinch hitter

In baseball, a pinch hitter is a substitute batter. Batters can be substituted at any time while the ball is dead ; the manager may use any player that has not yet entered the game as a substitute...

 for the Mets on September 15, 1973 at Shea Stadium

Shea Stadium

William A. Shea Municipal Stadium, usually shortened to Shea Stadium or just Shea , was a stadium in the New York City borough of Queens, in Flushing Meadows–Corona Park. It was the home baseball park of Major League Baseball's New York Mets from 1964 to 2008...

 against the Chicago Cubs

Chicago Cubs

The Chicago Cubs are a professional baseball team located in Chicago, Illinois. They are members of the Central Division of Major League Baseball's National League. They are one of two Major League clubs based in Chicago . The Cubs are also one of the two remaining charter members of the National...

. He has the distinction of getting a hit

Hit (baseball)

In baseball statistics, a hit , also called a base hit, is credited to a batter when the batter safely reaches first base after hitting the ball into fair territory, without the benefit of an error or a fielder's choice....

 in his first major league at bat

At bat

In baseball, an at bat or time at bat is used to calculate certain statistics, including batting average, on base percentage, and slugging percentage. It is a more restricted definition of a plate appearance...

. However, he only had one other at bat in 1973, and never played in the Major Leagues again. http://www.baseballprospectus.com/dt/hartsgr01.phphttp://www.baseball-reference.com/h/hartsgr01.shtml

Although he never played the field in the Major Leagues, in the minor leagues he was primarily an outfielder

Outfielder

Outfielder is a generic term applied to each of the people playing in the three defensive positions in baseball farthest from the batter. These defenders are the left fielder, the center fielder, and the right fielder...

. An attempt to become a pitcher in the minor leagues in 1975 did not result in a major league pitching career.http://www.ultimatemets.com/profile.php?PlayerCode=0218&tabno=1&subtab=m