Southampton boss Russell Martin says he is "frustrated" but confident that his side is getting better after a run of three matches without defeat.
Saints enter the second international break coming off a 1-1 draw against Championship strugglers Rotherham.
"We have made massive progress since the first international break," Martin told BBC Radio Solent.
"We've come a long way together as a group and everyone now understands what they are doing."
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Saints let their 1-0 lead over the Millers slip in the 74th minute at St Mary's on Saturday when Jordan Hugill lobbed Gavin Bazunu against the run of play.