ISLAMABAD - Former Test Cricketer Wajahatullah Wasti said Pakistan would miss tall pacer M Irfan in the Twenty20 World Cup as with him in the team, the green shirts had very bright chances of winning the mega event. Wasti said Pakistan should open from Sharjeel Khan and Ahmed Shahzad in the tournament. "Pakistan should appoint a regular wicket-keeper instead of Umar so that he can purely focus on his batting. Umar is a good choice for Twenty-20 wicket-keepering but not for ODIs," he said. Wasti, whose best ODI performance was 84 against New Zealand in the 1999 Cricket World Cup semifinal, which Pakistan won by nine wickets, said Razzaq said in Asian conditions you can never write off Pakistan in any format. "Our bowling unit is capable of winning any match from any situation and I am confident that Pakistan can win the World Twenty20 crown, just like we did in 2009," he said. Talking about the loss against Sri Lanka in the final of the Asia Cup, Wasti blamed captain Misbah ul haq saying he should have fielded first instead of batting after winning the toss. Wasti, who played in six Test matches between February 1999 and May 2000, said though Misbah batted well but the way Pakistan was going at chasing targets in the tournament was outstanding and fielding first in the final would have been better. He said our players fielded and bowled below par performance which also resulted in national team's defeat. "Though the reason behind Pakistan's defeat was their poor bowling and fielding but at the same time the umpires also played a key role in hammering the last nail in the green-shirts defeat," he said adding only Saeed Ajmal bowled well.