The first Bulgarian qualifier in the 48-year history of the season-ending event joined six-time champion Roger Federer advancing to the final four.

Dimitrov did it with stylish ruthlessness, defeating Goffin for the fourth time in five Tour-level meetings.

“A few days out of the year, whatever you touch it turns to gold,” Dimitrov said. “I work for those days. It’s a special win, for sure. I’m humbled.”

“When you play against Rafa, you have to play two hours and, yeah, 40, 45 minutes. You waste a lot of energy on the court” Goffin said. “You finish really late after treatment. It’s not easy to have a good recovery after a match like that.

“Yeah, it’s not a reason (for the loss). I was feeling great. Physically I’m feeling 100 percent. Yeah, I don’t think it’s because it was a long match against Rafa. It’s just that, yeah, Grigor played well and it was not easy for me today.”

Though the early stages offered entertaining exchanges, this highly-anticipated rematch of the Sofia final was a mismatch.

The sixth-seeded Dimitrov tore through 12 of the first 13 points and terrorized the Belgian’s second serve.

Dimitrov won nine of 10 points played on Goffin’s second serve in the opening set.

The 5’11” Belgian won just five of 25 points played on his second delivery as Dimitrov converted five of 11 break points. Trying to target Dimitrov’s one-handed backhand return, Goffin was often victimized by Dimitrov’s depth, angle and variety.

“Yeah, because first of all I didn’t make a lot of free points with my serve, so he put me a lot of pressure on the second serve,” Goffin said. “Even if I put some first serve, he was returning really well, even on the backhand side with a good slice return.

The Bulgarian brilliantly changed direction down the line off both things, sometimes even creating angles where none existed off shots near the center stripe.

A scorching forehand winner down the line sealed a 27-minute first set in which Dimitrov won 12 of 14 points played on his serve.

Dimitrov double Goffin’s winner output—18 to 9—and won 12 of 17 trips to net.

Goffin finally stopped his slide with a smash holding for the first time for 1-3 in the second set.

Charging through a love hold brought the sixth seed to 5-2.

When Goffin missed his signature shot, the backhand, Dimitrov had his third match point. He closed with a forehand capping a commanding 74-minute rout roaring into his eighth semifinal of the season.