There is. I forget exactly where it was, maybe it was before the 11th or 12th rounds, but you can hear Lewis asking for the "other bottle" in between rounds. Pryor started the following round by running out of his corner to the middle of the ring and right at Arguello. As pointed out earlier in the thread, the Miami sanctioning body was incredibly new and clumsy at the time, so the lack of drug testing was just one of numerous problems that happened on fight night. Great, great fight, well worth watching, and both the entire fight and the Legendary Nights documentary on it should still be on youtube. The black bottle is a real shame because it both throws a shadow over an all time great fight, and, (because this bout really forged and solidified Pryor's reputation), over Pryor, who was a hell of a fighter. Pryor and Arguello became big friends and still meet each other a couple of times each year apparently, (and Pryor went down to Nicaragua to help with publicity for Arguello's political career) so whatever happened they've come to terms about it, but something shady definitely happened.
Yeah the black Bottle controversy does cast a shadow over the fight. As rightly it should. Especially in light of the Resto v Collins fight in 83 and the tragic results, that ensued. Panama Lewis is scum as is Resto. Sad state of affairs http://sports.espn.go.com/sports/boxing/news/story?id=3329115 http://en.wikipedia.org/wiki/Billy_Collins_(boxer)