The defender was part of Liverpool’s second-half XI in the friendly against FSV Mainz 05 in Austria as Jürgen Klopp deployed a different team during each half.
An 86th-minute Luca Kilian own goal – turned into his net from Owen Beck’s left-wing cross – narrowly separated the sides amid sweltering conditions.
Liverpool 1-0 Mainz: Extended highlights
Having represented Wales at Euro 2020 over the summer, Williams felt fit and strong on his return and is now eager to press his claims for more opportunities for the Reds.
“It’s good to dust the cobwebs [with the] first 45,” the 20-year-old, who has 25 first-team matches under his belt to date, told Liverpoolfc.