South Africa finished day four at 80/5 in Hamilton - trailing New Zealand by 95 runs.
The Black Caps all-rounder showed no mercy as he helped his side to a 175 run first innings lead over South Africa.
A draw tonight against Fiji is all the All Whites need to progress to the next stage of Oceania qualifying for the 2018 FIFA World Cup.
The Broncos forward was found guilty of contrary conduct and fined $2100 by the NRL judiciary last week for pulling on Bromwich's strapped thumb.
Former Brazilian star Fabiano, who was sent off, said it was the first time he'd ever seen a referee "simulate" a foul.
British press have linked the All Whites striker to Everton for a reported NZ$26m as he vies for player of the year in the English Championship.
Murali Vijay looked to have snatched a low catch only to have his side called back by the umpires.
Williamson capped off a brilliant day with the bat reaching 5000 Test runs as well as scoring a ton against the Proteas in Hamilton.
NSW coach Laurie Daley says Stephen Kearney may need to drop or bench Shaun Johnson to get the best out of the enigmatic play maker.
Friend was forced to sit out the unbeaten Roosters' last round 20-6 win over South Sydney after his three front teeth were damaged a week earlier against Penrith.
Cleary remains the frontrunner to take the reins at Concord as the club weighs up its options over who replaces axed coach Jason Taylor.