SAINTS boss Russell Martin insisted "one player didn't do their job" when defending a last-minute set-piece which led to Leicester's winner on Saturday.

Match-winner Jordan Ayew was left free in the box in the 97th minute, allowing Harry Winks to pick him out, before squeezing in past Aaron Ramsdale at the near post.

Ayew's winner capped off a three-goal turn around which saw the Foxes come back from 2-0 down to extend Southampton's winless run.

Second-half goals from Facundo Buonanotte and Jamie Vardy turned things around after Cameron Archer and Joe Aribo had Southampton ahead at the break.

Asked about Leicester's late winner, Martin told the Daily Echo: "We do a lot of work on set pieces and we should have scored one today.

"We defended brilliantly against the best set-piece team in Europe last time out against Arsenal.

"Today, we are down to 10 men and we have a few subs on but one person had one job to do that would have stopped that goal and they didn't.

"The concern is that the person didn't do their job. It's not about detail or a lack of work. It would be a concern if we had a lack of detail.

"It's about taking responsibility and doing what you are asked to do."

Speaking more generally about the game, Martin said: "We had a man sent off and it changed the context of the game completely.

"We started the game brilliantly, we played so well, I didn't enjoy the last 15 minutes of the first half because we turned the ball over too much.

"We came out in the second half and started the game really well. We looked like we were going to score a third goal and they scored against the run of play.

"We had to make a change with Yuki and we don't defend well enough at that point. It's disrupted the team a little bit.

"Even at 2-1, it's ok, it was fine. Ryan gets sent off and it changes everything. We defended really well after Vardy scored his penalty.

"The lads defended brilliantly will spirit and togetherness. We brought Kamaldeen on to give us one moment in their box. We had it and he didn't make the most of it.

"We concede because someone doesn't do what they are asked to do from a corner again, which was the same against Ipswich."