He was a left-handed relief pitcher who graduated from Bishop Gorman High School, where he played baseball.

Smith made his major-league debut on April 14, 2006, against the Minnesota Twins and recorded one out before being removed from the game.

Henry, and two other minor league players were traded in July 2006 by the Yankees to the Phillies in exchange for Bobby Abreu and Cory Lidle.

In 2007, Smith pitched in nine games for the Phillies, compiling an 11.25 ERA before being optioned to the Triple-A Ottawa Lynx in late April.

He became a free agent at the end of the 2008 season and signed a minor league contract with the Chicago Cubs in January 2009.