Russell Martin’s half-time hairdryer set up Southampton’s second-half surge to send them to a 3-0 FA Cup replay win over Watford and a fifth-round clash with Liverpool.

Saints were dismal in the first half before Sekou Mara bagged a brace of well-hit strikes and Che Adams secured a 24th game unbeaten for the Championship promotion hunters.

“I wasn’t happy with the first half and told the players that,” said Martin.

“It is the first time in some time I have done that. My throat was a little bit sore.

“The team is built on being really brave with the ball but really aggressive witho...