Draper, Taylor Fritz won the first bunch against Shelton, who was performing every bit as he had won the fourth round.
He gathered only three points to the service and a break was enough to provide the first set.
However, the guerrilla crowd did not take long to find his voice, with great place strokes that help Shelton to win the first three matches of the second set.
After hitting the stands in the third game, a ball was warned for behavior like a nervous sperm, but withdrew to return support to the service.
When Shelton is double innocent, if it is doubly innocent to give a chance to serve in the semifinals, he goes to his favor.
Went down 0-30 but left the next four points to ensure victory.
“He probably felt a little more suitable for me,” said Draper BBC Sport.
“If he was alive, he would jump very high, but I felt that it was a problem to deal with dead conditions.”
However, such an advantage awaits Britain against Alcaraz.
“I think these courts take out the best in it,” said Draper.
“He can show all his skills and looking for a previous one.
“I think the conditions really fit it – but still work well in most cases.”
