Breel Embolo scored the winner against his birth nation as Switzerland beat Cameroon 1-0 at Al Janoub Stadium in their World Cup Group G opener on Thursday.
The Yaounde-born attacker refused to celebrate his second-half tap-in but his goal sparked jubilant scenes for the Swiss at full-time as Murat Yakin's side inflicted Cameroon's eighth successive World Cup defeat, one shy of the record.
The Indomitable Lions had the better of the first half and kept Yann Sommer relatively busy in the Switzerland net, though there were a couple of warning signs for Cameroon just before the break.
Embolo had been involved in one of those incidents and was fittingly the man to break the deadlock in the 48th minute, with Switzerland ultimately good value for the win after an effective second-half display.
Cameroon began with the greater purpose and should have scored 10 minutes in as Bryan Mbeumo blasted at Sommer and Karl Toko Ekambi inexplicably blasted over on the rebound.
Undeterred, Cameroon continued to look more threatening, with Martin Hongla testing Sommer from a tight angle 20 minutes later, and a crucial Silvan Widmer clearance denied Toko Ekambi a tap-in.
Switzerland finished the half stronger, however, and only a last-ditch Jean-Charles Castelletto tackle prevented Embolo a certain goal before Manuel Akanji nodded just wide in stoppage time.
But there was no denying Embolo just after the break as the Monaco forward swept home from Xherdan Shaqiri's low right-wing cross.
Andre Onana kept Cameroon in the contest just past the hour with a fine stop to thwart Ruben Vargas, but Rigobert Song's men were unable to capitalise at the other end.