Andy Murray has slammed the Lawn Tennis Association for failing to produce the next generation of stars following his success in the game.
The British number one, who has won Wimbledon, the US Open and an Olympic gold medal, helped Great Britain claim their first Davis Cup title in 79 years.
After Murray and his teammates - Kyle Edmund, James Ward, Jamie Murray and captain Leon Smith - stormed to victory in Ghent over the weekend, the two-time Grand Slam champion criticised the LTA for failing to build on his success.
"I feel like you waste time because nothing ever gets done and I don't like wasting my time," Murray told reporters. "I don't know where the next generation are. They need to act on it now. It's no use doing it in 18 months. Start now. It should have started before today. It's time to make some positive changes so that things get better."
Murray also admitted that since Michael Downey's appointment as LTA chief executive in 2013, he had only spoken to him for 10 minutes.
"I don't speak to any of the people who are in a high-up position about that," Murray said. "I haven't really spoken to them about anything.
"It is a shame because we always had good juniors, regardless of whether we had a load of players at the top of the professional game. It's concerning not to have any juniors in the Grand Slams because that is something we were always very good at. It's not ideal."
Meanwhile, Murray is one of 12 sports stars nominated for the BBC's Sports Personality of the Year award for 2015.
