A man was allegedly caught this week masturbating outside the window of a 14-year-old girl in Florida, not knowing that her father is a retired NFL player.

But according to police, the suspect, identified as 48-year-old Geoffrey Cassidy, quickly realized his mistake when former Tennessee Titans and Detroit Lions cornerback Tony Beckham came charging at him outside his home in Wellington Monday morning.

Beckham, 40, tackled the alleged ‘Peeping Tom’ and held him down until police arrived at carted him off to the hospital suffering from multiple broken bones.

Hero dad: Former NFL player Tony Beckham, 40 (left), on Monday tackled suspected 'Peeping Tom' Geoffrey Cassidy, 48 (right) outside his daughter's window

Beckham said he caught Cassidy with his hand down the front of his pants and his buttocks exposed looking inside his 14-year-old daughter's bedroom at their Florida home

Cassidy's booking photo released by the local police shows the suspect with a black eye and bruises on his face.

According to a probable cause affidavit cited by the Miami Herald, Beckham’s daughter had just gotten out of the shower and was getting dressed in her bedroom when her dad spotted a man crouching outside her windows.

Beckham, who was heading to his car to go to work, said he caught Cassidy with his hands down his pants 'making motions consistent with masturbating' and with his buttocks exposed.

Beckham yelled at the stranger peering into his daughter's room, which prompted Cassidy to flee.

Beckham, who played five season in the NFL, pursued Cassidy on foot and wrestled him to the ground 50 yards away from his home.

‘I caught him at the apartment over there and we just had a good conversation,’ Beckham quipped in an interview with WPBF.

When police arrived, a bloodied Cassidy claimed that his car had broken down and that he was sitting in the bushes outside Beckham’s residence waiting for the engine to 'cool down.'

However, the man refused to say where his car was and told police he was a 'transient. '

Cassidy was then taken to a hospital, where he was diagnosed with a fractured cheekbone and eye socket stemming from his encounter with the former football player.

Beckham, a former cornerback with the Tennessee Titans and Detroit Lions, chased down Cassidy and pinned him to the ground until police arrived

He was later booked into the local jail on a charge of lewd and lascivious exhibition.

Cassidy was released after posting $1,500 bond and ordered to stay away from Beckham’s daughter and the rest of the family.

Records indicate that the 48-year-old has a prior criminal history that includes charges of burglary, theft, attempted receiving of stolen property, and criminal trespass.

Beckham said both of his daughters were traumatized by the experience. The family have since installed blackout blinds to shield their home from prying eyes.

After starring at the University of Wisconsin-Stout, where he was twice named a Division III All-American, Beckham was drafted by the Tennessee Titans in the fourth round of the 2002 NFL Draft.

He played for the Titans until 2005 and later spent parts of the 2007 season with the Detroit Lions. His best season came as a member of the Titans in 2003, when he started three games and recorded his only professional interception. He also recovered a fumble and finished with a career-high 23 tackles as the 12-4 Titans reached the Divisional round of the AFC Playoffs.