If Andre Marriner thinks a player making the most of contact is a penalty then he must apply that consistently at both ends of the pitch.
Tottenham's Dele Alli has a reputation for going down easily and his tumble here will do nothing to help that image.
Steven Davis tried to intercept the ball on the edge of Southampton's penalty area and Alli went over his outstretched leg. Pundits saw it as 'clever play'.
I felt it was Alli finding Davis' leg but Marriner pointed to the spot.