 Complete the following phrase:  On 1 April 2017, Williams was a late replacement for the injured Conor Murray in Munsters line-up for the 201617 European Rugby Champions Cup quarter-final against Toulouse. Munster went on to win the game 4116 and progress to the semi-finals. Williams earned his 150th cap for Munster on 10 February 2018, doing so when he started in the provinces 335 win against Zebre in the 