Renaldo, Inc., doing business as Baker Street, owned and operated a nightclub in Georgia. On the evening in question, plaintiff Ginn became "silly drunk" at the nightclub and was asked by several patrons and the manager to leave the premises. The police were called, and Ginn left the premises. When Ginn realized that his jacket was still in the nightclub, he attempted to reenter the premises. He was met at the door by the manager, who refused him admittance. When Ginn persisted, an unidentified patron, without the approval of the manager, pushed Ginn, who lost his balance and fell backward. To break his fall, Ginn put his hand against the door jamb. The unidentified patron slammed the door on Ginn's hand and held it shut for several minutes. Ginn, who suffered severe injuries to his right hand, sued the nightclub for damages.

Is the unidentified patron an agent of the nightclub? Explain.