Dolphins' Merling practices after arrest

DAVIE, Fla. -- Defensive end Phillip Merling was in practice with the Miami Dolphins on Friday, less than 24 hours being freed from jail following a charge of aggravated battery against a pregnant woman.

Merling did not speak with reporters.

He's the fourth Dolphins player to be arrested this offseason, something coach Tony Sparano called "frustrating." Sparano also said the NFL is investigating the incident.

Merling was arrested in Weston, Fla. on Wednesday, then released from Broward County Jail on $15,000 bond and with orders that he stay away from the woman, who is his girlfriend.

Court records show the woman is 2 months pregnant with the couple's second child.