Philadelphia 76ers vs Boston Celtics - NBA London Game 2018 - O2 Arena [Getty Images]

Boston Celtics' Daniel Theis (right) during the NBA London Game 2018 at the O2 Arena, London. (Photo by Simon Cooper/PA Images via Getty Images) — see more

Boston Celtics' Daniel Theis (right) during the NBA London Game 2018 at the O2 Arena, London. (Photo by Simon Cooper/PA Images via Getty Images)

PA Images Simon Cooper - PA Images