Wales beat South Africa 17-5 for the first time in the sevens rugby world series to join New Zealand, Fiji and England as the only unbeaten teams in the Glasgow Sevens on Saturday.

South Africa had won the 27 previous matches against Wales, but this time the latter scored the first two tries to Rhys Shellard and Ifan Evans, conceded a last-minute try at the end of the half to Jamba Ulengo, scored the only try of the second half through Tom Grabham, and hung on.

That secured first place in Pool D after earlier wins over host Scotland and Russia, and set up a quarter-final on Sunday with Australia, who won the previous leg in Tokyo.

England won Pool A coming from 14-5 down to beat Australia 19-14. Tom Mitchell scored a converted try in the last minute of the first half for England to trail by two. Then England attacked from behind its own posts for the only try of the second spell.

Mitchell kicked the ball from out of his in-goal, Mat Turner toed it into Australia’s half, and after a ruck, Chris Cracknell passed with his heavily wrapped right arm to the left wing, where an unmarked James Rodwell scooted in behind the posts with three minutes to go.

England play defending champions South Africa in the quarters while Fiji take on Samoa and New Zealand play Argentina.

Series leaders New Zealand won Pool B after coming from behind to edge Samoa 22-21 after Samoa led 14-10 at the break.

Joeli Lutumailagi and captain Setefano Cakau each scored a pair of tries as Fiji walloped Argentina 47-7, conceding only two tries in three Pool C matches.