Liam Plunkett said England would be a "better team" if Jofra Archer made it into their World Cup squad.
Archer continued his late bid for a World Cup berth with a hostile opening spell against Pakistan at The Oval on Wednesday.
He took one wicket and conceded just six runs in four overs before rain washed out the game.
Archer was not included in England's preliminary squad for the World Cup but could force his way into their final 15 with solid displays against Pakistan in the five-match ODI series.
"He's obviously a class act," Plunkett told reporters afterwards at the Oval.
"He showed today, he's rocked up and bowled really nicely with pace and smashed the right good areas, picked up a wicket in the first few overs, beating the left-hander (Imam) on the outside edge."
Plunkett added: "It looks easy for him, he ambles in and bowls 93 mph, he makes it look effortless."
Questions have been raised about the effect on team morale of catapulting Archer, only recently qualified on residency grounds, into England's World Cup squad.
But Plunkett said: "With him in your squad, you're going to be a better team.
"Whoever performs best should be in the squad. If it wasn't Jofra, someone else would be knocking on the door... If they come in and bowl well, they deserve to be there."
On Tuesday, Andrew Flintoff said "anyone" should be dropped to make sure Archer had a place in the World Cup squad.