KL Rahul scored six fifties in the just concluded test series to provide the tenth occasion of an opening batsman scoring six or more fifties in a test series in the annals of test cricket. All such occasions are listed below

No	Player	Team	100	50	50+	Team	Oppn	Venue	Series
1	H Sutcliffe	Eng	4	2	6	Aus	Eng	Aus	1924-15
2	AR Morris	Aus	3	3	6	Eng	Aus	Eng	1948
3	CC Hunte	Win	0	6	6	Win	Aus	Win	1964-65
4	G Boycott	Eng	2	5	7	Aus	Eng	Aus	1970-71
5	SM Gavaskar	Ind	4	3	7	Win	Ind	Win	1970-71
6	KR Stackpole	Aus	1	5	6	Eng	Aus	Eng	1973
7	MA Taylor	Aus	2	5	7	Eng	Aus	Eng	1989
8	MA Atherton	Eng	0	6	6	Eng	Aus	Eng	1995
9	CJL Rogers	Aus	0	6	6	Aus	Ind	Aus	2014-15
10	KL Rahul	Ind	0	6	6	Ind	Aus	Ind	2016-17

KL Rahul scored six fifties in the just concluded test series to provide the secong occasion of an Indian opening batsman scoring six or more fifties in a test series after SM Gavaskar. SM Gavaskar had scored seven fifties against West Indies in West Indies in 1970-71 series.  Both the  occasions are listed below

No	Player	Team	100	50	50+	Team	Oppn	Venue	Series
1	SM Gavaskar	Ind	4	3	7	Win	Ind	Win	1970-71
2	KL Rahul	Ind	0	6	6	Ind	Aus	Ind	2016-17

What is more important in KL Rahul’s feat is that he became the first opening batsman in the annals of test cricket to score six fifties on Indian soil

 CC Hunte, MA Atherton, CJL Rogers and KL Rahul are the four opening batsmen in the annals of test cricket to score six half centuries in a test series as their fifties

No	Player	Team	100	50	50+	Team	Oppn	Venue	Series
1	CC Hunte	Win	0	6	6	Win	Aus	Win	1964-65
2	MA Atherton	Eng	0	6	6	Eng	Aus	Eng	1995
3	CJL Rogers	Aus	0	6	6	Aus	Ind	Aus	2014-15
4	KL Rahul	Ind	0	6	6	Ind	Aus	Ind	2016-17