Mark Sanchez was spotted at Electric Zoo on Friday on Randalls Island. We’re told the Jets quarterback, who is suffering from an injured right shoulder, bought a table, which started at $10,000, and arrived with a half-dozen girls and guys. Spies said Sanchez and his group “remained pretty low-key and enjoyed the music.” Electric Zoo’s final day on Sunday was canceled after two deaths from suspected drug overdose, four people hospitalized in critical condition and 31 arrests.