Chasing a revised target of 247 in 45 overs, Scotland slipped to 178 for 5, needing 69 with just 6 overs remaining, before fireworks from Richie Berrington, Gordon Drummond, and ultimately Gordon Goudie saw them pull off a quite memorable win.
Berrington reproduced the clean hitting which he showed when Scotland defeated Ireland in July, making an unbeaten 41 from 27 balls, and there were important cameos from Drummond (19 in 9 balls) and Goudie (14* from 9 balls).
Earlier Kyle Coetzer has made a quite magnificent 98 from 107 balls (10 fours) as Scotland kept pace with the required rate with rain threatening. Indeed when rain forced play to be suspended for 80 minutes, the teams were tied on Duckworth Lewis, Scotland having made 101 for 2 in 24 overs chasing Namibia's 266 for 8.
On the restart, Josh Davey (48 from 94 balls) struggled to up the rate, and it looked as if his sluggishness would cost his team dearly, before the late onslaught.
Earlier Craig Williams scored a brilliant 116 from 117 balls (8 fours, 5 sixes), sharing in a third wicket partnership of 191 with Sarel Burger (82).
Namibia faltered in the closing overs, pegged back by Gordon Goudie (4-55), whose late burst restricted Namibia to 266, when a total of 280-300 looked emminently achievable.
Scotland's three wicket win takes them to joint first place in the One-Day table alongside Ireland, with Afghanistan lurking on third place with two games in hand. Those games are against the UAE early next month, when Afghanistan will be the strongest of favourites to make it a three way tie at the summit.
There may be almost two years still to go in the qualification process for the World Cup, but you get the feeling after today that Scotland's destiny may well be to seize one of the two automatic places on offer.
