Already a stable favourite, I'm Imposing now has special place in the Chris Waller team after claiming back-to-back wins in the Summer Cup at Randwick.

He became just the first horse to win the race twice since Donald in 1928-29 and only the second horse in more than a century to carry more than 57.5kg to victory.

Punters stuck with I'm Imposing in the Boxing Day feature despite the 59kg on his back, sending him out the $3.30 favourite ahead of Pelicano ($4.60).

Tye Angland made sure I'm Imposing stayed in touch with the leaders so he did not have too much to do at the end of the 2000m.

It was a move that paid off with the nine-year-old showing his younger rivals how it was done as he sprinted to the line three-quarters of a length clear of Midsummer Sun ($7.50) with Casino Dancer ($31) a half head third.

"It's very rewarding," Waller said.

"It shows you don't have to be the best horse in the stable but if you are consistent the rewards come.

"He has been in the stable for a long time and I do get close to horses like this.

"All his runs this time in have been good apart from the Emirates Stakes and there were excuses there."

Since the Emirates Stakes at Flemington in early November, I'm Imposing has won the Festival Stakes and finished a close second in the Group Two Villiers before Friday's win.

Waller said next month's Gosford Cup was probably off the agenda and he was now looking ahead to bigger things.

"Weight has become a problem for him now," Waller said.

"I will talk to the owners but my recommendation would be to give him a break and look at races like the Hollindale Cup and Doomben Cup at weight-for-age in Brisbane.

"It shows that if you look after these older horses they can produce and he is just so honest."

I'm Imposing began his career more than six years ago with Sir Michael Stoute in England and Waller produced another import in an earlier race at Randwick.

Having just his second Australian start and third overall, Danjeu powered home over 1800m for a decisive win in the Maiden Plate.

"He is a horse who is still maturing and I think he will measure up," Waller said.