NEW DELHI: Former India seamer and bowling coach Venkatesh Prasad wants the struggling pace trio of Umesh Yadav, Bhuvneshwar Kumar and Mohammed Shami to concentrate on bowling “stump-to-stump” without trying too many variations in upcoming Cricket World Cup, starting February 14. India will open their campaign against arch-rivals Pakistan at Adelaide on February 15. “You just have to bowl stump-to-stump. There is no need to try anything extraordinary. In the shorter format, you just got to keep it tight and not give any width to the batsmen. That is the consistency our bowlers need to develop,” Prasad said. Prasad, who has played in two ODI World Cups in 1996 and 1999 and the bowling coach during India’s victorious World T20 campaign in 2007, is a bit worried about team’s form. “To a certain extent, yes,” he answered. “Having said that, the boys have got a gap for about two weeks. They have got the time to fix the flaws detected during the Australia tour. They might not have done well so far but World Cup is a new beginning. “Just one win in a high intensity game against Pakistan, would give their morale a huge boost for the subsequent games,”…