Bust a moves

The headline would only be correct if Federer and Djokovic were playing as doubles partners. In that sense, their two names could be taken to represent a singular team, and consequently moves would be correct. However, the blurb makes it clear that they were playing individually in separate matches, therefore moves should be move. Capisce? From "Federer and Djokovic moves on" in 24 hours Vancouver on March 16, 2011. It's a ridiculous error made worse by its presence in a headline.