He took out No. 4 Taylor Fritz on Thursday, No. 9 Tommy Paul on Saturday and No. 5 Casper Ruud on Sunday.

A piece of plastic might be the key to the Norwegian winning his first hard-court title in four years.

The left-hander picked up his second Top 10 win over an American this week by ousting reigning champ Tommy Paul.

"It's not every day you're able to turn a match like this around and be on the winner’s side of it."

"The ATP will review Mr. Opelka’s post-match comments as part of its standard disciplinary process.”