Members of the band Green Day, Billie Joe Armstrong and Tre Cool, made a cameo at the Oakland A's game Saturday night with Cool throwing out the first pitch.


Green Day lead singer Billie Joe Armstrong fires up the crowd during concert at the Greek Theater in Berkeley, Calif., on Tuesday, April 16, 2013. (Ray
Green Day lead singer Billie Joe Armstrong fires up the crowd during concert at the Greek Theater in Berkeley, Calif., on Tuesday, April 16, 2013. (Ray Chavez/Staff) ( RAY CHAVEZ )