Asked if Underhill could force his way into Borthwick’s thinking for their last-eight match, the defence coach, Kevin Sinfield, said: “Without a shadow of a doubt.

Source: https://www.theguardian.com/sport/2023/oct/08/sam-underhill-added-to-englands-world-cup-squad-to-replace-injured-jack-willis

The runner was occasionally joined by high-profile supporters, including England rugby union defense coach Kevin Sinfield.

Source: https://en.mercopress.com/2023/01/02/nuclear-engineer-completes-365-marathons-in-2022-and-raises-a-million-pounds-for-charity?utm_source=feed&utm_medium=rss&utm_content=main&utm_campaign=rss

The team around him will be crucial, with the impressive Kevin Sinfield a particularly close ally in his role as defence coach and spiritual leader.

Source: https://www.the42.ie/six-nations-head-coaches-5979521-Jan2023/