Two late goals from substitute Rachel Williams proved pivotal for United - despite her dreaming for three - as we beat the Saints 3-1 at the Silverlake Stadium in Eastleigh.
Ella Toone had opened the scoring in the first half with a superb strike, before Lexi Lloyd-Smith hauled the hosts level in the second half.
Following the match, Marc praised his team and said that the players he was able to bring on from the substitutes' bench made a great impact.
"We had full control," he said.
"We moved Southampton around.