Q de Kock’s 52 against India at Mohali T20I on 18.09.19 was in a losing cause to provide the tenth occasion of a captain wicketkeeper’s fifty going in vain in the history of Twenty20 Internationals. All such occasions are tabulated below

No	Player	Runs	Inns	Team	Oppn	Ground	Start Date
1	TM Dilshan	61	1	Srl	Ind	Col-RPS	10 Feb 2009
2	KC Sangakkara	64*	1	Srl	Pak	Lord’s	21 Jun 2009
3	KC Sangakkara	69	2	Srl	NZl	Col-RPS	04 Sep 2009
4	KC Sangakkara	59	1	Srl	Ind	Mohali	12 Dec 2009
5	A Bagai	53	1	Can	Afg	Col-SSC	04 Feb 2010
6	Mushfiqur Rahim	50	2	Ban	NZl	Dhaka	06 Nov 2013
7	A Bagai	67*	2	Can	Ire	Abu Dhabi	16 Nov 2013
8	BRM Taylor	59	1	Zim	Ire	Sylhet	17 Mar 2014
9	K Motlhanka	59	2	Bots	Nam	Windhoek	20 Aug 2019
10	Q de Kock	52	1	RSA	Ind	Mohali	18 Sep 2019

It als provides the third occasion of a captain wicket keeper’s fifty in a losing cause  against India in Twenty20 Internationals. All such occasions are tabulated below

No	Player	Runs	Inns	Team	Oppn	Ground	Start Date
1	TM Dilshan	61	1	Srl	Ind	Col-RPS	10 Feb 2009
2	KC Sangakkara	59	1	Srl	Ind	Mohali	12 Dec 2009
3	Q de Kock	52	1	RSA	Ind	Mohali	18 Sep 2019

Col-RPS and Mohali are the two grounds to witness captain wicket keeper’s fifty in a losing cause on two occasions. It is interesting to note that KC Sangakkara of Sri Lanka has witnessed his fifty going in vain on both the grounds.

No	Player	Runs	Inns	Team	Oppn	Ground	Start Date
1	TM Dilshan	61	1	Srl	Ind	Col-RPS	10 Feb 2009
2	KC Sangakkara	69	2	Srl	NZl	Col-RPS	04 Sep 2009
1	KC Sangakkara	59	1	Srl	Ind	Mohali	12 Dec 2009
2	Q de Kock	52	1	RSA	Ind	Mohali	18 Sep 2019