Philadelphia police stand behind the officer who Tasered a teenage Phillies fan who ran onto the field and resisited arrest during the game Monday night against the St. Louis Cardinals.

Police Commissioner Charles Ramsay said on KYW Radio Tuesday that "it was inappropriate for him to be out there on the field. Unless I read something to the contrary, that officer acted appropriately. I support him 100 percent."

With 44,817 fans watching at Citizens Bank Park, the 17-year-old male ran around the outfield in the eighth inning, eluding two security officers.

"This is the first time that a Taser gun has been used by Philadelphia police to apprehend a field jumper," Phillies spokeswoman Bonnie Clark said in a statement. "The Police Department is investigating this matter and the Phillies are discussing with them whether in future situations this is an appropriate use of force under these circumstances. That decision will be made public."

The fan will be charged with criminal trespass and related offenses, the team said. The Phillies did not release his name because he is a juvenile.

The fans in this amateur video were certainly rooting for the taser.