STEPHEN HENDRY admitted to throwing his microphone down in frustration while commentating at the Tour Championship.
, 56, was left irked by Si Jiahui's performance in his 10-6 defeat to on Tuesday.
Selby advanced to play in the quarter-finals on Wednesday at Manchester Central.
Si – who has never beaten the four-time world champion before – appeared to be limiting himself with negative shot choices.
was shocked by how many shots the Chinese star was refusing, opting to play safe rather than take on difficult pots.
The seven-time world champion told ITV 4: “Si Jiahui will be disappointed.
“At times he didn’t look like he belonged in that company, such was his shot choice.
“He didn’t look on it, focused, look like he belonged at that table withMark Selby.
‘Some of the shots he refused, there were some strange shot choices, for me. He had enough chances.
“I don’t know if he’s thinking about the shots that everyone thinks he should play, rather than just committing to the shot that he wants.
At one point Si refused a surprising red and played poor safety shot which allowed Selby back in.
In response, Hendry fumed: “How can you not go for the pot there? I know it’s not easy, but you have to play the pot surely.
“This one, I was in the commentary box, I threw the mic down, how can you not play that red to the right corner?
“It’s not a gimme, I’m not saying it’s an easy, easy shot, but in the end he doesn’t even play a good safety! Mark Selby pots the red off it.
“You’ve got to attack!”
Si, 22, is one of the brightest prospects in , despite still having a lot to learn.
He has shown that by qualifying for the , which only features the top 12 on the one-year ranking list.
Elsewhere, Barry Hawkins thrashed Shaun Murphy 11-1 on Monday to set up a on Wednesday.
The Tour is the final ranking tournament before the World Championships kick off on April 19.
