Goalkeeper Paulo Gazzaniga strayed too far beyond his near post, gallingly widening Nikica Jelavic's aim, to gift Everton the lead. They were now up against it.
When Seamus Coleman glided past the napping Lallana and then Nathaniel Clyne, it became clear just what Nigel Adkins is up against this season, particularly away from St Mary's. Exciting on the ball, brilliant going forward, but his side is not defensively-inclined. Coleman picked out Jelavic to score his second.
Southampton defending is something that will be talked about for hours over the course of the next eight months. They have now conceded 12 goals on their travels and it could have been more here. They lack steel in midfield – the cultured Steven Davis was the holder – and were playing their third different back four in as many games. Marounae Fellaini hit the bar and Jelavic went close to a hat-trick in a fashion that was all too easy. "One Nigel Adkins" rang out from the away end, but their manager must accept part of the blame.
"We've come away from home with a desire to win. We took the game to Everton but that spell before half-time we were far too open," he said. "You should always be positive and look to win games. I believe we play good passing football, but we are shipping far too many goals. It's something we're addressing."