Nick Kyrgios mocked ESPN’s pre-match/post-match interviewer Tom Rinaldi hours before his Saturday night match on Ashe Stadium vs. surprising Andrey Rublev.

“Who the hell is Tom Rinaldi and why he is commentating a tennis match when he has no idea what’s going on,” Kyrgios tweeted.

Rinaldi had the last laugh. After the third-round match, Rinaldi was on the court interviewing the winner — and it wasn’t the hard-hitting Kyrgios. The Australian bad boy lost in straight sets to Rublev, 7-6, 7-6, 6-3.

Kyrgios, under investigation by the ATP for calling the tour “corrupt,” extended his streak to seven years of failing to get out of the third round of the Open and into the second week. Kyrgios wore a Gordon Hayward Celtics jersey in a post-match press conference with reporters. Hayward was on hand to watch his friend.

Afterward, Kyrgios was in his full-blown sarcasm mode, refusing to explain why he went aftter Rinaldi. “Amazing aura about him,’’ he said. “Yeah [he] was awesome.”

Asked if he thinks he’ll be suspended, Kyrgios said jokingly, “I’m a pretty boring player. I don’t bring much to the sport.”