Top ref compares diving in football to doping
Match officials spend hours researching teams to see which players are most likely to fake fouls

As far as referee Alberto Undiano is concerned, diving by players is comparable to doping because it is becoming more sophisticated and difficult to detect.
Referees in turn spend hours studying teams, arming themselves with information on which players are likely to dive and make life difficult, said Undiano.
The Spaniard, who will be officiating in the Champions League this season, said detecting simulation was one of the biggest challenges facing match officials.
The 39-year-old said that, until recently, it was relatively obvious when a player had dived.
"Simulation used to be like a dive into a swimming pool but today there are situations where the player practises how to provoke contact," he said during at Uefa headquarters.
On the television you see it well but when you are running it’s more difficult
"You see the contact but it's not always simple to see who provoked this contact. The simulation is increasingly hidden, like doping.