He said: "It was a rush to get him qualified for Cheltenham and three quick runs took their toll."
But he goes off a mark of 135, 1lb lower than he carried in the Fred Winter, and Murphy hopes he can exploit it.
He said: "He's on a fair mark. He was a very weak horse last season but he's strengthened up. He's a talented little horse and, though I haven't schooled him, he is apparently in tip-top form."
Paddy Power Gold Cup (sponsor's odds): 6 Chapoturgeon, Tranquil Sea, 7 Poquelin, Tarotino, 8 Tatenen, 9 My Petra, 10 Northern Alliance, 10 Ballyfitz, 14 others.