It was just over 12 months ago when we had come across the next superstar of international cricket in J. P. Duminy and he confirmed his supreme level of talent in his 2nd Test match vs Australia in Melbourne with a brilliant 166 which followed his resolute 50* on debut in Perth. In the 16 innings since this time he has only scored 2x 50s and has failed to reach 20 on 13 occasions averaging ~23.
1 v Australia Perth 17 Dec 2008
50* v Australia Perth 17 Dec 2008
166 v Australia Melbourne 26 Dec 2008
13 v Australia Sydney 3 Jan 2009
16 v Australia Sydney 3 Jan 2009
17 v Australia Johannesburg 26 Feb 2009
29 v Australia Johannesburg 26 Feb 2009
73* v Australia Durban 6 Mar 2009
17 v Australia Durban 6 Mar 2009
7 v Australia Cape Town 19 Mar 2009
56 v England Centurion 16 Dec 2009
11 v England Centurion 16 Dec 2009
4 v England Durban 26 Dec 2009
0 v England Durban 26 Dec 2009
0 v England Cape Town 3 Jan 2010
36 v England Cape Town 3 Jan 2010
7 v England Johannesburg 14 Jan 2010
9 v India Nagpur 6 Feb 2010
0 v India Kolkata 14 Feb 2010
I'm not convinced