Ralph Hasenhuttl has revealed Southampton targeted Manchester United's inability to track runners properly during the 1-1 draw at Old Trafford on Saturday.
United had taken the lead courtesy of Jadon Sancho's strike in the first half, but Che Adams equalised just after the interval to earn the Saints a deserved point, just three days after their excellent 3-2 victory at Tottenham.
Southampton pressed and harried well in both games, with the Red Devils looking bereft of ideas in attack after Adams' strike. United are built around high profile stars like Cristiano Ronaldo, Bruno Fernandes and Paul Pogba, but Hasenhuttl intimated that their lack of desire to track back once they lost possession helped Southampton.
He said: “It’s not a big secret that when they lose the ball the reverse gears are not the best from everyone."
On his side's performance, Hasenhuttl added: "It's very enjoyable with this team. We are really good to watch to be honest. It's fantastic from our side. We always have a solution and a new way of playing and this is good to watch and the way we want to go.
"It is super tough to play Wednesday night and Saturday lunchtime, especially against such a team but we had chances to win.
"We scored immediately after half-time with a beautiful goal and had two or three massive chances.
"So we had good chances to win today. Absolutely, Fraser [Forster] does a fantastic job and has a big part of this point today."
Southampton's good form in recent weeks has propelled them into the Premier League's top ten, though they remain adrift of the pack chasing European football.