Hashim Amla stroked a sublime 87 to help South Africa take command of the second test against England.
Cook and Jennings negotiated a tense 4 overs at the end after South Africa set England 474 to win.
Dean Elgar (80) and Amla extended their third-wicket stand to 135 as the visitors maintained their grip on the match.
England 205 and 1 for 0 need another 473 runs to beat South Africa 335 and 343 for 9 dec (Amla 87, Elgar 80, du Plessis 63, Moeen 4-78).
Matches Tagged in ClipDex2017 ENG v RSA 2nd Test
Series Tagged in ClipDex2017 ENG v RSA Test serie ...
Players Tagged in ClipDexMoeen Ali Cook, Alastair N Philander, Vernon D Broad, Stuart C J Elgar, Dean Anderson, James M Du Plessis, Faf Amla, Hashim M Dawson, Liam A Stokes, Benjamin A Jennings, Keaton K
Grounds Tagged in ClipDexTrent Bridge
Categories Tagged in ClipDexTest Matches