Nadal vs Djokovic (Roland Garros 2014) : Refereeing Error - Double Fault

For the story, Novak Djokovic made a double fault on a break point that would have allowed Rafael Nadal to break back in the 1st set, as you can see on this video. Unfortunately, neither Pascal Maria nor the line judges saw it and Novak Djokovic enventually won the first set 6-3. Fortunately Rafa ended up winning the match in 4 sets, Djokovic making ironically a double-fault on match point.