Chelsea found a breakthrough after just 13 minutes in their FA Cup third round clash against Scunthorpe United at Stamford Bridge on Sunday afternoon.
The visitors had made a bright start to the encounter and passed the ball around the Bridge with a level of confidence that belied their league standing.
However, Chelsea’s quality shone through as Costa was able to apply the finish touches to a well-worked move from the hosts as Guus Hiddink was immediately rewarded for selecting a strong line-up.
There was some confusion initially over whether or not the Spaniard had got the final touch, with Scunthorpe defender Scott Laird handed the misfortune of being guilty of scoring an own goal after early replays.
Nevertheless, further investigation showed that Costa’s left foot diverted the ball into the back of the net as the Premier League champions threatened to add to their tally shortly after through Cesc Fabregas and Pedro.
Although Hiddink may well have been tempted to play some of his younger players with the pressure off this weekend, the Dutchman has made his intentions clear as he will look to win as many trophies as possible between now and the end of the season when his contract expires.