Main Sequence was ticketed for the Investec Derby after justifying a jump up in class to extend his unbeaten sequence to four under Ted Durcan with a cosy success in the Lingfield Derby Trial.
Despite flashing his tail proved too determined for the 5-4 favourite Shantaram, wining with something in hand by three-quarters of a length.
There was a big gap to the third Cavaleiro and connections are in principle keen to go on to Epsom with their son of Aldebaran, who was trimmed to 16-1 from 25s for the Investec Derby.
Durcan has no fears about his mount getting a mile and a half and said: "He was really switched-off and settled. He found loads and will stay a mile and a half. He's a lovely horse and is hopefully on the way up. There's no reason to think he won't stay."
Lanigan said: "We were going to go for the Feilden (at the Craven meeting), but off 89 it would have been pointless missing out on the handicap option.
"He came out well from each of his three gallops since, and while he does flash his tail Ted said you don't feel it and he picks up when you ask him."
"I'm glad we didn't run him back on the soft, because if he'd run badly it would have told us nothing," added Lanigan.
"There is a question mark on his breeding whether he will stay the Derby trip, but Ted said he galloped out to the line and when the other horse came to him he was just a little idle.
"The plan was if he won today and we were impressed we would do that (go to Epsom). I've been very, very lucky, the Niarchos family have supported me from day one and I'm very grateful for that."