Sebastian returned for a second spell at Newcastle Falcons in the summer of 2022, having helped the club to promotion during the 2019-20 Championship-winning season.
The 6 foot 7 former South African Under-20s international has played for Leicester Tigers and London Irish in England as well as French club Mont de Marsan.
He re-joined the Falcons from American side Austin Gilgronis, having helped them to top spot in the Western Conference of Major League Rugby in 2022.
Making 24 appearances during the 2022-23 season, the Johannesburg native was among the league’s leading line-out forwards, regularly appearing in and around the top of the charts for both steals and takes on his side’s own throw.
Pizza and pasta
Sports psychology work with athletes