Vailani operates primarily as a No. 8 and made his Test debut for Tonga against Japan in November 2017.
The back-rower is a strong ball carrying forward with a background in the 7s format, during his previous four years spent in Japan.
In January 2018, Sione signed for Saracens and scored three tries in nine first-team appearances.
Vailanu has played four times for Tonga, which included a try at Millenium Stadium in their recent Autumn International against Wales.
The Tonga powerhouse Sione Vailanu joined Wasps from Saracens in 2019.
|2019 - present|
|2017 - 2019|
|2018 - 2019|