A defeat against Konta would allow Czech Karolina Pliskova, who lost in the second round, to take pole position instead.
She showed flashes of potential and posed plenty of questions but Konta usually had the answers, collapsing to her knees when converting the decisive match point after just over two hours of play.
"I want to win more, not just one match".
Halep did her best to avoid the topic when cross-examined after her confident 7-6, 6-2 win over double Grand Slam champion Victoria Azarenka. "Sometimes maybe he tried (coaching), but I don't know". We will see tomorrow.
But if the Brit's army of fans inside Court One thought it would be that easy beyond the opener, they were to be left disappointed.
She was a semi-finalist three years ago and reached the final of the recent French Open at Roland Garros. I don't think there was much in that again today.
There was very little between the two players as Garcia, ranked No21 in the world, matched Konta's impressive power in rallies and on serve throughout.
Much like Konta's epic match with Vekic, by the third set the two players were exhausted and the set looked to be going entirely with serve. I really believe in myself that I can win every match I play.