The 20-year-old was man of the match at Elland Road last Friday, helping Leeds to a 4-0 win over the Baggies.
Roberts, who came through Albion’s academy, was sold to the Yorkshire club just over 13 months ago for £2.5million rising to a possible £4m.
And the former Walsall loanee, who set up two of Leeds’ goals, relished in his memorable evening.
“To get a good performance against my old team was pleasing,” he said. “To show how much I have come on and how much Leeds have improved me.
“Our main objective was to set the pace from the start of the game. The way that we play on the front foot, fighting for every ball, scoring early is what we strive to do.
“It all came together and it showed with the result.”
Leeds stretched their lead over Albion to seven points last Friday, and went top briefly, before Norwich regained the summit on Saturday.
They bounced back in style following a 1-0 defeat away at QPR three days previously.
“After the loss on Tuesday, we showed the character that the team has got, along with the fight that we have,” said Roberts.
“If we keep doing what we keep doing, it won’t matter about other results.”
Roberts has been involved in seven goals for Leeds this season from 17 Championship appearances.
His sale last January facilitated the disastrous loan deal for Liverpool striker Daniel Sturridge.
Sturridge played just 116 minutes for Albion, scoring no goals during a four-month stint blighted by injury.