Ireland centre Stuart McCloskey said there is "more to come" from fellow Ulster players Cormac Izuchukwu and Rob Baloucoune following Ireland's 20-13 Six Nations victory over Italy at the Aviva Stadium.
After a humbling 36-14 defeat by France in their opening fixture, Ireland bounced back against a much-improved Italy side.
Jamie Osborne, Jack Conan and Six Nations debutant Baloucoune crossed the white line for Andy Farrell's side, who thwarted a late flurry of chances to deny Italy a late leveller.
"He [Rob] is class and I think he has shown how good he has been when he has played this year. For Ulster, he has been world-class when he has been fit. You could say that about the last four or five years," McCloskey told The Ireland Rugby Social.
"He is electric, he scores tries that other people can't and takes balls in the air that other people can't take.
"Rob and Izzy have so much X-Factor. I think they showed that today and there is more to come. It gives me energy when I am playing with those guys as well."
Former Ireland scrum-half Conor Murray added that he believes Jamison Gibson-Park and Jack Crowley should start Ireland's next match against England on 21 February (14:10 GMT) after both featuring off the bench against Italy.
After his introduction in the 56th minute, Crowley converted Baloucoune’s try and added a penalty later in the game to put Ireland 10 points ahead.
"I think you do, don't you?" Murray said when asked if he believed both should begin at Twickenham Stadium.
"I think Crowley starts the next game because he did so well when he came on.
"I don't think his stats are where he has had them before, but he came on and kicked two kicks. I know one of them was very easy and you could argue that Sam's [Prendergast] kicks were gettable as well.
"We are going around a roundabout with this one and this is Jack's turn again. I am just hoping someone grabs it [the chance]. "