Webster saw off Joe Murnan 3–0 in the first round of the 2017 World Championship and then held on when Mensur Suljović rallied from 3–1 down, by taking all three legs in the deciding set to win 4–3 and reach the third round for the second successive year. The opposite then happened as it was Webster who levelled at 3–3 having been 3–1 down, but Daryl Gurney took the seventh set by three legs to one to progress 4–3. Victories over Finland, Ireland and Russia helped Webster and Gerwyn Price into the semi-finals of the World Cup. A pair of 4–2 wins over the Belgian team of Kim and Ronny Huybrechts saw them play in the final, where their only point came courtesy of a Webster win over Raymond van Barneveld as they went down 3–1 to the Dutch. Webster has been battling dartitis in recent years, but hoped that this result in a team event could boost his individual performances.