Group A, Kimberley: Pakistan 255-9 (50 overs) beat Namibia 84 (17.4 overs) by 171 runs
Wasim Akram and Shoaib Akhtar proved too hot to handle as Pakistan raced to an emphatic victory.
The combination of Shoaib's express pace and Wasim's prodigious swing proved too much for Namibia, with Wasim returning his best World Cup figures of 5-28 in his record-breaking 34th appearance in the tournament.
Both bowlers took wickets with successive balls, but neither could complete a hat-trick.
The African underdogs were in danger of replacing Canada's 45 all out against England in 1979 as the lowest score in World Cup history as they slumped to 42-9.
A four from Rudi van Vuuren saw them avoid that ignominy, however, as he and Deon Kotze put on 42 for the last wicket, by far the highest partnership of the innings.
45 Canada v England 1979
68 Scotland v West Indies 1999
74 Pakistan v England 1992
84 Namibia v Pakistan 2003
86 Sri Lanka v West Indies 1975
Namibia gave a good account of themselves in the field, despite three dropped catches.
But Pakistan added 81 in their last 10 overs to set what would have been a tough target even if Shoaib and Wasim had been feeling off-colour.
Salim Elahi performed the anchor role to top score with 63 as Pakistan made a solid and unspectacular start.
Inzamam-ul-Haq was bamboozled by Kotze's off-spin and bowled for four before Yousuf Youhana and Rashid Latif combined to add 58 in nine over for the fifth wicket.
Youhana timed the ball well in his 43 and Latif was in innovative mood with his 36 including a scoop sweep to the long leg boundary.
Two run outs followed in the closing overs but Wasim added a final flourish with 20 not out off 14 balls.
There was plenty more excitement to come as five wickets went down in the first three overs of Namibia's reply.
Jan-Berry Burger (14) was the only top order batsman to reach double figures but attempted a rash firm-footed drive and was comfortably taken by Younis Khan at slip.
Wasim claimed five wickets in a one-day international for the 26th time when he trapped Deon Kotze in front - his fourth lbw of the innings.
Shoaib uprooted Bjorn Kotze's middle stump but was frustrated by a no-ball call, and Pakistan were forced to turn to spin to polish Namibia off.
It proved a good move as Saqlain Mushtaq tempted van Vuuren (14) into and indiscreion and he skied at catch to cover, leaving Kotze on 24 not out.
Pakistan: Saeed Anwar, Saleem Elahi, Younis Khan, Inzamam-ul-Haq, Yousuf Youhana, Abdul Razzaq, Rashid Latif, Wasim Akram, Waqar Younis (captain), Saqlain Mushtaq, Shoaib Akhtar
Namibia: Riaan Walters, Stefan Swanepoel, Jan-Berry Burger, Danie Keulder, Gavin Murgatroyd, Louis Burger, Deon Kotze (captain), Melt van Schoor, Gerrie Snyman, Bjorn Kotze, Rudi van Vuuren.