The record-breaking Welsh wing answered an injury SOS from the Lions 18 months after he bode farewell to the Millennium Stadium with the Three Feathers upon his chest.
Williams, who is currently playing club rugby in Japan and was due in Australia as a radio summariser, lined up on the left wing as one of four newcomers in the Lions team.
But he could not help the famous tourists as Tevita Kuridrani grabbed an early try and the Brumbies held on.
“We did all we could out there and ran our socks off but in fairness the Brumbies spoiled every facet of the game that we tried to play off,” said Williams.
“The breakdown was a nightmare, they had good pressure on us in defence and it was tough for us to play.
“We would have liked to have had a little bit more ball but it wasn’t meant to be.
“I had one team run yesterday. Obviously it is never easy to fit back in and I had to get used to the calls and patterns but I’m not using that as an excuse.
“We trained hard, did our homework and had a look at the Brumbies, our calls and moves but as I said it just wasn’t meant to be.”
The Lions ultimately paid the price for a lacklustre defence and Williams admits it was a difficult opening 40 minutes before a late rally.
“We were put under immense pressure, as we knew we would be , and it was a good Brumbies side,” said Williams.
“We were second best in most facets of the game; tempo – the Brumbies were far quicker to the break down than us and if there was any loose ball they would get to it before us. Their line speed was good, ours wasn’t and it certainly didn’t make Andy Farrell happy.
“Rightly so he had a go at half-time and we tried to react in the second-half .”
