Johanna Konta is playing "better tennis than anybody" and can win her maiden Grand Slam title at the French Open, says 1976 champion Sue Barker.
The British number one, 28, meets Czech teenager Marketa Vondrousova in a last-four match pushed back to Friday by bad weather on Wednesday in Paris.
No British woman has reached the Roland Garros final since Barker won her only Grand Slam in Paris 43 years ago.
"Jo is playing the best tennis I have ever seen her play," Barker said.
American great Billie Jean King agreed with Barker, saying Konta was now a better player than she was when she reached the 2017 Wimbledon semi-finals.