In the Brisbane quarter-final, Dimitrov's opponent Kyle Edmond suffered an ankle injury and went down to the court.
Instead of going around the court to check on Edmund, the tennis pro went up and over the net before helping the British No. 2 tennis player to the sideline.
Edmund had new strapping applied to his ankle but clearly wasn't moving freely when he returned and lost the next two games, the latter one off his own serve.
"At the end of the day, health above all".
The Ukrainian battled back from 4-0 down to claim the opening set before needing four match points in the second to secure the win.
Dimitrov saved both and in the next game the Bulgarian took advantage of a couple of errors to break for a 5-3 advantage, before serving out the set when Edmund netted a backhand. It was very unfortunate what happened, for sure.
More news: Powerball, Mega Millions jackpots almost $800 million combined; Ohio Lottery resultsThe other semi-final will feature another Australian, 18-year-old Alex De Minaur, and unseeded American Ryan Harrison - who had been due to play Murray on Thursday before the Briton withdrew from the tournament. I've seen this too many times, I know the feeling.
"I will look to fly to Sydney and I'm ready to pick myself up and go again, " he said. It's just tough when you come up against the top seed (Dimitrov) and I would love to win one of those really big ones. "I played some pretty good tennis in the second and third sets".
Belarusian qualifier Aliaksandra Sasnovich reached her first tour-level final with a 7-6 (3), 6-4 semifinal win over seventh-seeded Anastasija Sevastova.
Karolina Pliskova kept her title defense on track with a 3-6, 7-5, 6-2 win over 2012 victor Kaia Kanepi, setting up a semifinal against Elina Svitolina.
