Cucho Hernandez scored twice as Watford boosted their hopes of securing Premier League survival with victory over Southampton at St Mary's.
Hernandez produced a fine finish from a tight angle to punish Mohammed Salisu's poor attempted back-pass, knocking the ball past exposed keeper Fraser Forster to slot in after 14 minutes.
The 22-year-old Colombian's second was even more impressive, as he volleyed in from Juraj Kucka's cross at the far post to put Roy Hodgson's side in control.
But after Kucka was denied by Forster at close range, Mohamed Elyounoussi struck at the back post after Che Adams headed on James Ward-Prowse's free-kick to hand the hosts a lifeline before half-time.