Days after guiding Great Britain to their first Davis Cup title since 1936, Andy Murray has hit out at the Lawn Tennis Association (LTA) for failing to nurture future talent.
The world number two was an integral part of the Davis Cup triumph, winning all his games throughout the competition - including all three rubbers in Sunday's 3-1 victory over Belgium.
It was a fourth major title for Murray - who has taken British tennis to a new level since the retirements of Tim Henman and Greg Rusedski - having previously won the US Open, Wimbledon and Olympic gold during his career.
However, the 28-year-old is concerned the LTA are not doing enough to produce talent strong enough to carry on his work in the future.
"I don't know where the next generation are," he told reporters. "I feel like I am saying 'I don't know' a lot but I genuinely don't.
"It is a shame, because regardless of whether we had a load of players at the top of the professional game, the juniors were never a problem.
"We always had good juniors. We had junior number ones, we had juniors competing for Grand Slams on the guys and the girls side. Now it seems that isn't happening.
"Katie Swan, I think, is a good young girl but there are not loads coming through. It is a bit concerning not to have any juniors in the Slams. Bringing them on from junior to senior was our problem -- but now we don't even have the juniors. It is not ideal."
And Murray was also highly critical of the National Tennis Centre in Roehampton after using the facilities and being shocked at the lack of other players at the facility.
He added: "I went to the National Centre to practise for a couple of days after a tournament in Shanghai," he told reporters.
"I was there on a Monday at two or three o'clock, and then on Tuesday at the same time, and there was not one person using any of the indoor courts and not one person in the gym.
"I took photos of it because the place cost £40m and there are no people. No players practising, nothing going on at all, like empty.
"And, you know, it doesn't necessarily have to be performance players involved but to have nothing is such a shame, to walk in and find nobody there."