Koo Ja-cheol scored twice as South Korea made a winning start to their Asian Cup campaign with a 2-1 win over Bahrain at Al Gharafa Stadium.
The 21-year-old - a last minute replacement for injured Monaco forward Park Chu-young - struck either side of half-time before Faouzi Aaish converted a late penalty for Bahrain.
The Koreans signalled their intent straight from the kick-off and produced their first chance with just six minutes on the clock as Bolton winger Lee Chung-yong played a neat pass for Park Ji-sung, but the Manchester United midfielder's shot was straight at goalkeeper Mahmood Mansoor.
The East Asians continued to threaten with Koo forcing a save from Mansoor after 24 minutes before further chances from Lee and Park.
The pressure told five minutes before the break when he received the ball just outside the area and struck an effort which deflected off Abdulla Marzooqi and landed in the back of the net.
Koo - a constant menace to the Bahrain defence - almost added a second just before the break when he shot from distance but his effort flew over the bar.
But six minutes after the restart Koo was not to be denied his and South Korea's second goal when he pounced after Mansoor pushed Cha Du-ri's shot back into the area.
Bahrain pushed after that in a bid to find a way back into the game and they got on the scoresheet in the 83rd minute when Aaish scored from the spot after Abdulla Al Dakeel was fouled inside the area by Kwak Tae-hwi, for which the Korean defender was subsequently sent off.