Credit: Anthony J. Causi/Splash News Online

"Old Friends," indeed.

At Wednesday's New York Yankees game, two men sat unnoticed in the bleachers: Paul Simon and Art Garfunkel.

Now 68, they barely resemble the way they were during their 1960s heyday: For one, Garfunkel has lost his trademark afro.

They first met in the sixth grade in 1953 and went on to sell more than 40 million albums in the U.S.

"We met when we were 11; we started to sing when we were 13," Simon once joked. "And we started to argue when we were 14."

The duo are kicking off a North American tour on July 3 in Vancouver.