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DA Warner of Australia and AN Cook of England scored 103 and 104 not out at the end of the second day of the ongoing Melbourne test between Australia and England to provide the ninth occasion of left handed opening batsmen scoring centuries  in the first innings and second innings of a test in the history of test cricket. All such occasions are enumerated below

No	No	Player	Runs	Inns	Team	Oppn	Ground	Start Date
1	1	JH Edrich	164	1	Eng	Aus	The Oval	22 Aug 1968
	2	WM Lawry	135	2	Aus	Eng	The Oval	22 Aug 1968
2	1	MA Taylor	334*	1	Aus	Pak	Peshawar	15 Oct 1998
	2	Saeed Anwar	126	2	Pak	Aus	Peshawar	15 Oct 1998
3	1	GC Smith	126	1	SAF	Pak	Cape Town	02 Jan 2003
	2	Taufeeq Umar	135	2	Pak	SAF	Cape Town	02 Jan 2003
4	1	GC Smith	126	1	SAF	Win	St John’s	29 Apr 2005
	2	CH Gayle	317	2	Win	SAF	St John’s	29 Apr 2005
5	1`	AJ Strauss	129	1	Eng	Aus	The Oval	08 Sep 2005
	2	JL Langer	105	2	Aus	Eng	The Oval	08 Sep 2005
	3	ML Hayden	138	2	Aus	Eng	The Oval	08 Sep 2005
6	1	AJ Strauss	142	1	Eng	Win	Trinidad	06 Mar 2009
	2	CH Gayle	102	2	Win	Eng	Trinidad	06 Mar 2009
7	1	AN Cook	115	1	Eng	SAF	The Oval	19 Jul 2012
	2	GC Smith	131	2	Aus	Eng	The Oval	19 Jul 2012
8	1	DA Warner	119	1	Aus	SAF	Adelaide	22 Nov 2012
	2	GC Smith	122	2	SAF	Aus	Adelaide	22 Nov 2012
9	1	DA Warner	103	1	Aus	Eng	Melbourne	26 Dec 2017
	2	AN Cook	104*	2	Eng	Aus	Melbourne	26 Dec 2017

DA Warner of Australia and AN Cook of England scored 103 and 104 not out at the end of the second day of the ongoing Melbourne test between Australia and England to provide the third occasion of left handed opening batsmen scoring centuries  in the first innings and second innings of a test in the Ashes series. All such occasions are enumerated below

No	No	Player	Runs	Inns	Team	Oppn	Ground	Start Date
1	1	JH Edrich	164	1	Eng	Aus	The Oval	22 Aug 1968
	2	WM Lawry	135	2	Aus	Eng	The Oval	22 Aug 1968
2	1`	AJ Strauss	129	1	Eng	Aus	The Oval	08 Sep 2005
	2	JL Langer	105	2	Aus	Eng	The Oval	08 Sep 2005
	3	ML Hayden	138	2	Aus	Eng	The Oval	08 Sep 2005
3	1	DA Warner	103	1	Aus	Eng	Melbourne	26 Dec 2017
	2	AN Cook	104*	2	Eng	Aus	Melbourne	26 Dec 2017

The only occasion of left handed openers who captained their sides scoring centuries in the first and second innings of a test was witnessed in the test match between West Indies and England at Trinidad in Mar 2009. AJ Straus {142} and CH Gayle {102} were the left handed openers who  lead their sides scored centuries in the first  and second innings of the test.

No	No	Player	Runs	Inns	Team	Oppn	Ground	Start Date
1	1	AJ Strauss	142	1	Eng	Win	Trinidad	06 Mar 2009
	2	CH Gayle	102	2	Win	Eng	Trinidad	06 Mar 2009