Australian bad boy Anthony Hill could find himself in hot water yet again after he walked off during an ill-tempered second-round match against fellow Victorian Billy Haddrell at the Hong Kong Squash Centre last night. Spectators on Centre Court were stunned when Hill, without warning, offered his hand to Haddrell when the world number eight was 4-0 down in the fourth game and 2-1 games down, allowing Haddrell to score a 9-15, 15-12, 15-10, 4-0 victory. The match was marred by constant line calls and frequent physical clashes between the pair. Moments after Hill walked off, the fiery Australian turned to referee Peter Hill and said: 'Peter, you have been deeply unfair.' Haddrell, the world number 35, was as surprised as anyone with the incident, saying it had taken the gloss away from his victory. He said he had refused Hill's handshake at first but then accepted when offered it a second time. 'I wanted to beat him. There's never been any problem between Hill and myself. We come from the same state. We get along fine. I don't really understand why he did that,' said Haddrell. Hill defended his action, saying he walked off because he was suffering from a hamstring injury - although he didn't make any indication to the referee that he was withdrawing because of injury. 'It was a physical thing - nothing else. I had a tough match yesterday and I stretched it [hamstring] a bit,' said Hill, who has had numerous brushes with authority in a chequered career. Asked whether he walked off for any other reason, Hill said: 'Can you read my mind? I'm injured, that's it.' The Professional Squash Association (PSA) will launch an investigation that could mean more fines for the player with the worst disciplinary record on the circuit. Hill is understood to be just GBP50 away from being banned from the circuit for a year. Tournament director Marlene Lee said the matter would be investigated pending the physio and referee's reports. Referee Hill said he had never seen a player walk off in his three years as a referee. 'I wanted to be fair to both players. As far as I am concerned, I make the decisions based on how I see things. The players have to accept these decisions. Whatever happened was unfortunate. I think Hill [Anthony] brought this upon himself,' said Peter Hill. 'Personally, I don't think he should be punished. He's suffered enough.' World champion Jonathon Power said Hill's mind was his 'worst enemy'. 'He's the most talented player on the circuit but his head is sometimes not there. Anthony is a great asset to the game. He's a phenomenal player,' said Power. Power, meanwhile, advanced to the quarter-finals after brushing aside Australia's Stewart Boswell, 15-4, 15-14, 15-9. Power, who complained of back spasms and breathing problems in his first-round match on Wednesday, had no such problems as he wore down the 25th ranked Boswell with a clinical victory. 'I felt a lot better today. I had no spasms or breathing problems. I need practice on my strokes though. I'm struggling a bit. There's still a long way to go,' said the world number one. World number two Peter Nicol also enjoyed a relatively easy passage through to the last eight when he won a battle of left-handers to defeat England's Chris Walker, 15-12, 15-13, 15-9. SECOND-ROUND RESULTS 1-Jonathon Power (Canada) beat Stewart Boswell (Australia) 15-4, 15-14, 15-9; Billy Haddrell (Australia) beat 8-Anthony Hill (Australia) 9-15, 15-12, 15-10, 4-0 (retired); 2-Peter Nicol (Scotland) beat Chris Walker (England) 15-10, 15-8, 15-6; Alex Gough (Wales) beat Martin Heath (Scotland) 15-12, 15-13, 15-9; 4-Paul Johnson (England) beat John White (Scotland) 15-17, 15-8, 15-10, 15-8; Graham Ryding (Canada) beat Stefan Casteleyn (Belgium) 11-15, 15-5, 15-11, 15-13; 6-Simon Parke (England) beat Paul Price (Australia) 15-12, 15-12, 15-13; 3-Ahmed Barada (Egypt) beat Mark Chaloner (England) 15-9, 14-15, 15-11, 15-10.