Two goals in the space of three second-half minutes saw Southend United secure a 2-2 draw with 10-man Northampton Town at Roots Hall.The Cobblers led 2-0 at the break but strikes from Jason Demetriou and Anthony Wordsworth saw Phil Brown's side fight back to pick up a share of the spoils.Northampton opened the scoring in the 20th minute when Leon Barnett's low shot from Yaser Kasim's right-wing corner was deflected into his own net by Nile Ranger.The Cobblers doubled their advantage in the 43rd minute when Matt Crooks curled a low 20-yard shot into the bottom right-hand corner.However, Southend stepped things up at the start of the second half with Demetriou firing home a deflected 20-yard shot in the 48th minute.And - two minutes later - Wordsworth, who was making his first appearance since suffering a hamstring injury in April, burst into the box to score.But the Cobblers dug in to pick up a point despite Crooks being shown a second yellow card in stoppage time.