After that reversal, Murphy said he may have run him too quickly after Navan. "It is not 100 per cent whether he will run in the Paddy Power Dial-a-Bet Chase and we'll make a decision in the middle of next week - our only worry is that it may be coming a bit quick," said Murphy.
"Touch wood he seems good and has come out of Sandown well. We did a few tests after the race but nothing has come to light.
"Navan may have been a harder race than we thought and as he is best fresh. We probably went to war again a little bit too soon. I don't want to make that mistake again."
Queen Mother Champion Chase (Paddy Power odds): 6-4 Master Minded, 7 Twist Magic, 8 Big Zeb, Forpadydeplasterer, 10 Kalahari King, 12 Barker, 16 Well Chief, 25 Petit Robin, 33 Planet Of Sound.
Donald McCain is hopeful that Inventor can follow up his shock defeat of Manyriverstocross when he returns to Ascot tomorrow.
Inventor earned a 25-1 quote for the Supreme Novices' Hurdle at Cheltenham after winning there last month on his hurdling debut. McCain said: "That was a surprise and we're hoping to find out a bit more about him."