By GARY FITZGERALD

Force of nature: Sione Vailanu looks to punch through the Tigers defence
PICTURES: Getty Images

ADAM Powell paid tribute to his “young wrecking ball” Sione Vailanu after the No.8 showed more than a hint of Billy Vunipola’s strength and power at Allianz Park.
The Sarries academy boss praised both 23-yearold Tongan Vailanu and England U20 lock Joel Kpoku who bares a strong resemblance in playing style to Maro Itoje.
Both Vailanu and Kpoku grabbed tries as Sarries kept their unbeaten season going with a victory in their opening fixture in the Premiersh...