Durban: Ashwell Prince and AB de Villiers hit centuries as South Africa continued their domination of the West Indies on the second day of the series-deciding third Test at Kingsmead on Friday.
South Africa raced to 556 for four declared, a first innings lead of 417. The West Indies were 23 for no wicket in their second innings at the close.
On another one-sided day, the South African batsmen scored freely with only one hiccup when overnight batsmen Hashim Amla and Graeme Smith were dismissed in the space of six balls inside the first hour.
The only other South African wicket to fall during the day was that of Jacques Kallis, who made 74.
Prince (123 not out) and De Villiers (103 not out) offered no respite to a lacklustre bowling attack as they shared South Africa's third century partnership of the innings and joined captain Smith (147) as individual century-makers.
South Africa scored at a rate of 4.6 runs an over and the West Indians managed only eight maidens in 120 overs.
The rapid scoring enabled Smith to declare with time enough to bowl 11 overs before the close and still have three full days to complete a series victory after they surprisingly lost the first Test in Port Elizabeth by 128 runs before hitting back with a seven-wicket win in Cape Town.
Daren Ganga and Brenton Parchment successfully batted out the day but the tourists face a long battle to avoid a heavy defeat.
Already without injured captain Chris Gayle and with stand-in skipper Dwayne Bravo unable to bowl because of a side strain, the West Indies were without Shivnarine Chanderpaul, who had flu and did not field.
Because of the time spent off the field, Chanderpaul would not be able to bat in the second innings for five-and-a-half hours or at number seven in the order.
The West Indian bowlers toiled with minimal reward as the pitch played easily under a hot sun, in contrast to the bowler-friendly conditions when the tourists were bowled out for 139 on the first day after being sent in to bat.
West Indian hopes that the bowlers would get assistance from conditions early in the day failed to materialise.
Smith and Amla batted aggressively at the start before Darren Sammy had Amla (69) caught off a leading edge by West Indian captain Dwayne Bravo at a short mid-off position near the bowler. The partnership was worth 199 off 258 balls.
Smith followed when he edged a drive against Jerome Taylor, the most impressive of the West Indian bowlers, and was caught behind by Denesh Ramdin.
Following the brace of wickets new batsmen Kallis and Prince consolidated and the scoring rate slowed. But Kallis was soon into his stride as he and Prince put on 122 for the fourth wicket.
Kallis looked in dominant mood before he edged a cut against off-spinner Marlon Samuels to Runako Morton at slip. He faced 101 balls and hit 13 fours.
Prince played a supporting role but picked up his tempo after Kallis was out, reaching his fifty off 77 balls.
Prince and De Villiers put on an undefeated 182 for the fifth wicket. Prince reached his seventh Test century off 170 balls, while De Villiers made his fourth off 108 deliveries.