Kell Brook made a victorious return to the ring by knocking out American Mark DeLuca in the seventh round at his hometown Sheffield Arena.
Brook, who had spent 14 months out of the ring, dominated former US marine DeLuca, 31, from the start.
He knocked his opponent down in the third round before a shuddering left hook ended the bout in the seventh.
“This is my last chance and 2020 is my year,” said Brook, who has endured a testing period since 2016.
In that time he has broken both eye sockets and given up his world welterweight title to Errol Spence Jr in a dramatic fight at Bramall Lane in 2017.
His last outing was an underwhelming points win over Australian Michael Zerafa in December 2018.