How good was Gayle's demolition of Pune

Chris Gayle, picture from RCB's Flickr stream

Chris Gayle played one of the most incredible innings on Tuesday night. His 175* (66) broke all sorts of records, both for the IPL and for t20 and cricket in general.

He is without question an incredible player, and is an absolute phenomenon in the IPL.

But how good was that innings in the context of the rest of the IPL? I heard some people say that it was meaningless, because the pitches and grounds in India are so easy to score runs on, and the bowlers in the IPL aren't up to much. I heartily disagree with both of these statements, but the only real way to look at the innings is to look at how others have gone in similar conditions.

To do this I'm using my modified batting index for each innings. This system rewards scoring runs, and being not out, but adjusts it for the number of deliveries faced. To put these scores in context an index of 100 would be 70*(49) or 60(33). It doesn't take into account the context of the match, so there can be some high scores that cost a team, and low ones that win a match, but I think it's better than just looking at the runs scored or the strike rate by themselves.

Here's the top 20 innings in the IPL so far this year:

Name	Score	For	Against	At	Index
CH Gayle	175* (66)	RCB	Warriors	Bangalore	464.02
V Kohli	93* (47)	RCB	Sunrisers	Bangalore	184.02
SR Watson	101 (61)	Royals	Super Kings	Chennai	158.95
V Sehwag	95* (57)	Daredevils	Mum Indians	Delhi	158.33
DA Miller	80* (41)	Kings XI	Warriors	Mohali	156.1
CH Gayle	92* (58)	RCB	Mum Indians	Bangalore	145.93
KD Karthik	86 (48)	Mum Indians	Daredevils	Mumbai	145.13
CH Gayle	85* (50)	RCB	KKR	Bangalore	144.5
MEK Hussey	88 (51)	Super Kings	Royals	Chennai	143.22
MEK Hussey	86* (54)	Super Kings	Kings XI	Mohali	136.96
RG Sharma	62* (32)	Mum Indians	Warriors	Mumbai	120.13
AB de Villiers	64 (32)	RCB	Super Kings	Chennai	118
RG Sharma	73 (43)	Mum Indians	Daredevils	Delhi	115.44
RG Sharma	74* (50)	Mum Indians	Daredevils	Mumbai	109.52
Mandeep Singh	77* (58)	Kings XI	Warriors	Mohali	102.22
AB de Villiers	31 (8)	RCB	Warriors	Bangalore	100.75
DA Warner	77 (56)	Daredevils	Royals	Delhi	99
LJ Wright	34 (10)	Warriors	Kings XI	Mohali	98.6
SPD Smith	39* (16)	Warriors	Super Kings	Chennai	95.06
EJG Morgan	47 (21)	KKR	Sunrisers	Kolkata	94

There's a significant distance between Gayle and the next best innings.

Another way to look at it is to look at what percentage of Gayle's index each innings got. Here's the top 10:

Name	Score	Gayle points
CH Gayle	175* (66)	100
V Kohli	93* (47)	40
SR Watson	101 (61)	34
V Sehwag	95* (57)	34
DA Miller	80* (41)	34
CH Gayle	92* (58)	31
KD Karthik	86 (48)	31
CH Gayle	85* (50)	31
MEK Hussey	88 (51)	31
MEK Hussey	86* (54)	30

How about how it stacks up against all T20 innings anywhere:

Name	Score	For	Against	At	Index
CH Gayle	175* (66)	RCB	Warriors	Bangalore	464.02
LP van der Westhuizen	145 (50)	Namibia	Kenya	Windhoek	406
GR Napier	152* (58)	Essex	Sussex	Chelmsford	398.34
BB McCullum	158* (73)	KKR	RCB	Bangalore	341.97
CL White	141* (70)	Somerset	Worcs	Worcester	284.01
A Symonds	112 (43)	Kent	Middlesex	Maidstone	278.7
M Vijay	127 (56)	Super Kings	Royals	Chennai	276.68
ST Jayasuriya	114* (48)	Mum Indians	Super Kings	Mumbai	270.75
SB Styris	100* (37)	Sussex	Gloucs	Hove	270.27
RE Levi	117* (51)	South Africa	New Zealand	Hamilton	268.41
CG Williams	116 (48)	Namibia	Scotland	Windhoek	268.25
CH Gayle	128* (62)	RCB	Daredevils	Delhi	264.26
DA Warner	135* (69)	NSW	Super Kings	Chennai	264.13
H Davids	112* (48)	Cape Cobras	Warriors	Cape Town	261.33
KJ O'Brien	119 (52)	Gloucs	Middlesex	Uxbridge	260.88
Ahmed Shehzad	113* (49)	Barisal	Rajshahi	Dhaka	260.59
A Symonds	117* (53)	Chargers	Royals	Hyderabad (Deccan)	258.28
YK Pathan	100 (37)	Royals	Mum Indians	Mumbai (BS)	256.76
CL White	116* (53)	Somerset	Gloucs	Taunton	253.89
AC Gilchrist	109* (47)	Chargers	Mum Indians	Mumbai	252.79

And then the "Gayle Points" for the top 20 innings of all time:

Name	Score	Gayle points
CH Gayle	175* (66)	100
LP van der Westhuizen	145 (50)	87
GR Napier	152* (58)	86
BB McCullum	158* (73)	74
CL White	141* (70)	61
A Symonds	112 (43)	60
M Vijay	127 (56)	60
ST Jayasuriya	114* (48)	58
SB Styris	100* (37)	58
RE Levi	117* (51)	58
CG Williams	116 (48)	58
CH Gayle	128* (62)	57
DA Warner	135* (69)	57
H Davids	112* (48)	56
KJ O'Brien	119 (52)	56
Ahmed Shehzad	113* (49)	56
A Symonds	117* (53)	56
YK Pathan	100 (37)	55
CL White	116* (53)	55
AC Gilchrist	109* (47)	54

How good was Gayle's innings? It was about 14% better than the next best innings ever. That's how good it was.