South African fast bowlers Dale Steyn and Vernon Philander helped gain an advantage over Sri Lanka on the second day of the first Test at Kingsmead in Durban.
Steyn's four-wicket haul restricted Sri Lanka to just 191.
Philander, along with fellow fast bowlers Duanne Olivier and Kagiso Rabada, kept the pressure on the Lankans.
The hosts, well inside their second innings, have got a lead of 170 with six wickets in hand.

Dave Rennie becomes first Pacific Islander to lead All Blacks
FIFA offering $12 tickets to World Cup Play-Off Tournament
Resurgent Wolves stun Liverpool, Everton enjoy home comfort
Real Madrid's Rodrygo to miss World Cup for Brazil
Getafe stuns Real Madrid to shake up LaLiga title race
