Back to blue at troubled Olympic aquatics venue

(Photo: The Associated Press)RIO DE JANEIRO (AP) — Goodbye green. It's back to clear water in the pool at the Maria Lenk Aquatics Center, allowing synchronized swimmers to see underwater on the first day of Olympic competition.

Officials completed pumping nearly 1 million gallons of clean water into the pool used for synchro with little time to spare before Sunday's free routine preliminary began. They had raced to drain green-tinged water out of the pool overnight at a venue that has embarrassed local organizers.

The massive undertaking was necessary to ensure clear water for both judges and competitors, who spend much of their time underwater during synchronized swimming.

"At last this is…