After the contest, a clearly emotional Konta admitted just how tricky it has been to get past her French opponent.
But Konta has won both their previous tour encounters, including a hard-fought three set quarter-final victory on her way to her career highlight success at this year's Miami Open.More news: U.S. moves into medal round
Garcia quickly sorted out her game and it became a match of who would blink first.
"I'm not thinking about the ranking because I was in that situation one more time", she said.
Halep controlled the game reducing the errors while signs of rust surfaced in Azarenka's game. Azarenka-Halep is a superstar fourth-round matchup, but neither player is head and shoulders above the field.
Konta was forced to a tiebreak and the crowd cheered with a massive applause the forehand victor that brought her 4-1 ahead and accompanied with even more enthusiasm the set-clinching 108 miles per hour ace. Garcia forced two set points, which Konta saved, and then she earned a set point for herself but could not convert it.More news: Hundreds evacuated as wildfires spread across Californian coast
She won the first game of the decider to love but it took nine games before either managed a sniff of a break. When Garcia had another set point, she appeared to hit it long, the ball was called out but then called in on review, to Konta's huge frustration.
Her level dipped in the second as French star Garcia's rose, and at 5-1 it looked a foregone conclusion.
The brilliant down the line victor that made her reduce the gap to 3-5 was too little and came too late. "I think it's very hard for them to understand my position in it".
"I feel that I play much better than previous years", she said.More news: Normandy Four telephone conversation due in July - Ukraine's president
Beating Wozniacki, Vandeweghe celebrated her sixth top 20 win on this surface having already beaten No.7 Konta (2017 Birmingham), No.7 Vinci (2016 Wimbledon), No.3 Radwanska (2016 Birmigham), No.6 Safarova (2015 Wimbledon), No.11 Ka.Pliskova (2015 Wimbledon).