Lukaku set up Everton’s final goal in the contest, with a delicate cross with the outside of his left-boot which Arouna Kone headed home to complete his hat-trick.
It was a piece of skill which showcased the finesse that goes with Lukaku’s ample power, and Martinez was full of praise for the striker after the match.
“The assist shows that Rom has got that quality,” he said. “It’s one thing seeing the pass, but another to execute it with the outside of his foot. To do it with that precision is quite impressive.
“You don’t expect a typical number nine to have that quality to do that.
“But it is another example of players enjoying their football, having the freedom to try things with the quality we always knew they had.”
Lukaku also got on the scoresheet in the match against Sunderland, as he rounded Costel Pantilimon and tapped the ball into an empty net.
That goal continued his fine start to the season, and took his tally of goals to eight in just 14 appearances.
If Lukaku can keep netting at that rate, Everton look well placed to have an exciting campaign – with the side showing signs of promise over the early stages.
Although the Toffees currently sit in ninth place in the Premier League table, many of their key players are starting to return to fitness, and there is a hope that they can climb further up the table in the coming weeks.