Josh Adams took his tour total to eight in three games with a hat-trick from full back, while Louis Rees-Zammit sped to the posts from half-way for his second in as many games.
Then Josh Navidi, who was taken to South Africa as a replacement for the injured Justin Tipuric, thought he had scored on his debut after racing in from half-way. His big moment was ruined, though, when the TMO ruled it out for an illegal clear out in the ruck that returned the ball to the Lions.
The Lions led 26-0 at half-time and took less than three minutes to get off the mark as an Adam Beard line-out take on the right was converted into the first of Adam’s three tries on the left.
Warren Gatland’s men experienced a disrupted build-up to the game in Johannesburg after a player and a member of the Lions management team tested positive for COVID-19. Liam Williams, Anthony Watson, Dan Biggar, Gareth Davies, Tadhg Beirne, Conor Murray, Stuart Hogg and Chris Harris all had to come out of the matchday 23 to isolate as a result.
Adams is now chasing down the 10 tries that JJ Williams scored on the 1977 tour to New Zealand – two less than he managed in as many games in South Africa in 1974. The record by a Welsh player on a single tour is 18 scored by John Bevan in 14 matches in New Zealand in 1971.