Ademola Lookman scored on his Atletico Madrid debut as his new side thrashed Betis 5-0 in the Copa del Rey quarter-finals. David Hancko headed in the 12th-minute opener from a corner before Giuliano Simeone slotted in to double the advantage in the 30th minute and Lookman fired in from inside the box eight minutes before half-time, completing a one-two with Pablo Barrios started by the forward inside his own half.