It looked for all the world like Southampton had successfully negotiated a tricky test at Vicarage Road before Watford were gifted a 96th minute equaliser. The Saints led through a first goal since August for Che Adams in the 55th minute but conceded an avoidable goal right at the death which will frustrate Russell Martin no end. Whilst the draw does extend Southampton‘s unbeaten run to 12 games, the manner of the draw will make it feel like a loss. This is not the first time this season that the Saints have failed to see a game out, with draws against Rotherham United and Huddersfield Town le…