In Senior National Santosh Trophy Football Championship, defending champion West Bengal will take on Railways today at Guwahati Nehru Stadium in Assam in the second semi-final match. In the first semifinal, Manipur beat Services by one goal to Nil in extra time and entered the final of the tournament.AIR will broadcast live commentary of the semi-final and the final matches of the Santosh Trophy Football Championship from Guwahati. Live commentary of today's semi-final can be heard from 1740 hrs onwards.