Tennis star Martina Navratilova watched intently in...

Tennis star Martina Navratilova watched intently in a Riverhead, N.Y., courtroom as a lawyer claimed that she twisted a free-lance photographer’s arm “like a pretzel,” causing injuries requiring surgery.

Navratilova, who is being sued for $2 million and has countersued for $4.5 million, scoffed and at times laughed as attorney Marvin Mitchelson argued on behalf of Arthur Seitz, 43, of Fort Lauderdale, Fla.

Seitz claims he suffered injuries to his arm and shoulder and “mental and psychological anguish” after an altercation on Sept. 7, 1982, at the U.S. Open after Navratilova lost to Pam Shriver in the quarterfinals.

Navratilova claims “fear, extreme anxiety and mental and psychological anguish.” The cases have been combined in a jury trial in Riverhead before state Supreme Court Justice Lester Gerard.