Jarrod Bowen scored a second half winner for West Ham United in a 1-0 Premier League victory at Southampton as new Saints manager Ivan Juric suffered defeat in his first game in charge of the struggling club on Thursday.
The visitors led just before the hour-mark when Bowen poked the ball into the net from three yards after Niclas Fullkrug's flick-on into the path of the forward as Southampton failed to clear from a needlessly conceded corner.
The home side were the better team in the first half and should have led, but striker Paul Onuachu missed a trio of headed opportunities and Mateus Fernandes was also profligate in front of goal.
West Ham move up to 13th in the table with 23 points from their 18 games, while Southampton are rooted to the bottom with six points from the same number of fixtures and a single victory all season.