Pakistan's seven foot tall left-arm pacer Mohammad Irfan has suffered an injury which may prevent him from taking part in Sunday's must-win game against Ireland, DawnNews reported.

Irfan suffered a recurrence of his hip injury during Pakistan's crucial game against South Africa but managed to complete the match, playing a pivotal role in the 29-run victory.

Leg spinner Yasir Shah is being tipped as Irfan's likely replacement for the all-important match.

The development may come as a big blow to Pakistan who are already without the services of key bowlers Saeed Ajmal, Mohammad Hafeez, Umar Gul and Junaid Khan for the World Cup.

According to Pakistan captain Misbah-ul-Haq, the pace trio Wahab Riaz, Sohail Khan and Mohammad Irfan had filled the void left by the absence of the stars bowlers brilliantly and were instrumental in keeping the Greenshirts alive in the World Cup.

They have combined for 28 of the 38 wickets his side have taken and UAE captain Mohammad Tauqir said his team felt they were as good as South Africa's attack of Vernon Philander, Morne Morkel and Dale Steyn.

It is unclear whether Irfan's injury may also prevent him from playing the quarter-final should Pakistan progress.