Pakistan lost four games against England in the recently-concluded ODI series on Sunday on the trot after the first encounter was washed away due to rain. Pakistan coach Mickey Arthur lamented the shambolic effort by his side on the field as he termed poor fielding a real worry for the team going ahead. He was also not happy with the bowling performance by Pakistan as the bowlers were taken to the cleaners in all four completed games with England managing to cross the 300-run mark at ease on all four occasions. ESPNcricinfo quoted Pakistan coach Arthur saying, "Our fielding has been very disappointing. That has been a massive difference between the two sides," as saying after the 4-0 series defeat. He further added, "At Southampton and Nottingham, it was anybody's game going into the last five overs. We competed really well. The one difference has been our fielding and that's a real worry for me," he added. He further added, "We sit here and take a hell lot of the positives out of this series. Our batting has gone to another level and we have batted extremely well. That's given our dressing room a massive amount of confidence. When we were coming to England, people were saying we were a 280 team. I am taking a fair amount of positives certainly in that department out of this series.” The World Cup gets underway on May 30 and Pakistan have limited time to sort out the fielding issues before they play their opening game against West Indies on May 31st.