Saints are now scoring goals but contrastingly are leaking them at the other end, will Martin Caceres be the answer.
It cannot be denied that Yoshida and Jack Stephens hve put in the proverbial 110% effort in recent weeks, but the stark reality is that effort alone is not good enough at this level of football and that has showed in the number of goals that Saints have leaked since they came together after the injury to Virgil Van Dijk.
Taking away cup games they have been the central defensive partnership in 4 full Premier League games and in those matches 6 goals have been conceded, most of which could have been avoided, add the 3 at Wembley and it has not been as watertight as Claude Puel would have liked, especially as all 4 of those Premier games were against opposition below us in the table.
On Sunday however we now come up against Tottenham Hotspur, a team with the best home record in the division, the joint tightest defence and one of the highest scoring teams overall, it is going to be an uphill task.
The good news is that Everton showed a week or so ago that they are not impenetrable and now without Harry Kane they will be missing their top scorer, but that will not be enough.
We have to tighten up at the back and cut out the lapses in concentration that have cost us dearly in recent weeks.
So will Sunday be the right game to bring in short term signing Martin Caceres, he has been in full training for a month now and has got some games under his belt in the U23 league, if he is not ready now then he will never be.
However the question for Claude Puel is whether the free scoring Spurs side is the time to give him his debut ?
I would say it is, if only for the fact that his undoubted quality and experience will trump the lapses of concentration we are suffering at the back.
We have to do something different in the back four or we will get the same results and that means leaked goals and trying to outscore Spurs is a lot different from outscoring Watford.
So my opinion is that we need to bring Caceres in for this game, fitness wise should not be a problem and his experience and quality will make up for a lack of match sharpness, we signed him for a reason, a very good reason and if we are not going to play him, what was the point in doing so.