Southampton boss Ronald Koeman has revealed his delight following his side's 3-1 win over West Ham United at Upton Park.

The Hammers took the lead on their own patch, but Koeman's team responded with three unanswered goals to claim their first victory of the Premier League season.

"After they went 1-0 up it was difficult with the second ball because they played the long ball and long throw ins," he told BBC Sport.

"We knew that but we didn't dominate it and luckily it was 1-1 near half-time and that gave us belief to play and play to win. That's what I liked in the second half we played with pressing, deserved to win and scored some great goals."

Koeman took charge of the Saints this summer, replacing new Tottenham Hotspur boss Mauricio Pochettino.