Bowling changes – in a 20-over innings- after the mandatory first and second over, there can be 18 maximum bowling changes. Minimum 3 bowlers required to bowl in that inning.

e.g the first over is bowled by A-bowler followed by B-bowler in second over, now C-bowler takes over in the third over(replacing A). Below table explains the process.

OVER #	Bowler
1	A
2	B
3	C
4	A
5	B
6	C
7	A
8	B
9	C
10	A
11	B
12	C
13	A
14	B
15	C
16	A
17	B
18	C
19	A
20	B

In this IPL8 – there have been 1355 bowling changes – which is (67.95%) per match. So far it has been a very successful indicator for all teams that took part in this IPL….Either their run-rate went down(<=6 runs/over) from previous over, or lost wickets in that over!

1^st bowling – Bowling Changes:715 overs. Wickets: 214 (34.68%)

2^nd bowling -Bowling Changes:620 overs. Wickets :191 (31.00%)

RCB (70.00%) & RR(69.60%) lost maximum wickets when bowling was changed when they batted. However they also benefited when they bowled. They were able to pick 81.20(RCB) and (76.70%) RR when they changed their bowlers.

Here is a list of all four teams that qualified for IPL8 playoff.

The indicators are:

– total overs

– No. of bowling changes

-Wickets fell in the bowling change over –

-6 or less runs scored in the bowling change over

CSK	Bat	Bowl
Total Overs	273.3	273.1
Bowling changes	182	145
Wickets fell	54(68.40%)	37(39.36%)
Run rate <=6	84(30.73%)	74(27.06%)
MI	Bat	Bowl
Total Overs	258.5	254.2
Bowling changes	187	168
Wickets fell	47(63.50%)	47(70.10%)
Run rate <=6	75(29.01%)	55(21.63%)
RCB	Bat	Bowl
Total Overs	210.3	220.2
Bowling changes	140	161
Wickets fell	47(70.10%)	66(76.70%)
Run rate <= 6	50(23.77%)	70(31.78%)
RR	Bat	Bowl
Total Overs	237.3	256.1
Bowling changes	142	208
Wickets fell	48(69.60%)	56(81.20%)
Run rate <= 6	55(23.17%)	87(33.97%)

International players have picked 202 wickets(32.70%) when they were brought into bowl. Against 18.60% by Indian International and 14.30% when Domestic bowlers was brought into bowl.

Here is a statistical analysis of these four teams

Chennai Super Kings	Bat	Bowl	Gap Factor
Mts/Won	14/9	14/9
Runs	2262	2073	189
Overs	273.3	273.1	0.2
Wickets	79	94	15
Avg	28.60	22.05	6.58
r/o	8.30	7.59	0.70
b/w	20.70	17.48	3.27
Scoring rate	58.90	61.11	-2.17
Boundary rate	17.90	14.79	3.09
Mdn	1.82	1.09	0.74
% C 5	9.49	14.13	4.64
% L 5	31.75	38.77	7.02
% 6+	68.25	61.23	7.02
%10+	32.85	25.72	7.12

Mumbai Indians	Bat	Bowl	Gap Factor
Mts/Won	14/8
Runs	2231	2258	-27
Overs	258.5	254.2	4.3
Wickets	74	67	-7
Avg	30.10	33.70	-3.55
r/o	8.60	8.90	-0.27
b/w	21.0	22.78	-1.79
Scoring rate	61.00	64.94	-3.90
Boundary rate	19.00	19.20	-0.21
Mdn	2.19	1.81	0.38
% C 5	10.95	8.70	-2.25
% L 5	31.02	30.07	-0.95
% 6+	68.98	69.93	-0.95
%10+	35.04	37.32	-2.28

Royal Challengers Bangalore	Bat	Bowl	Gap Factor
Mts/Won	14/7
Runs	1992	1935	57
Overs	210.3	220.2	-9.9
Wickets	67	86	19
Avg	29.70	22.50	7.23
r/o	9.50	8.48	0.99
b/w	18.90	15.37	3.54
Scoring rate	63.60	63.54	0.05
Boundary rate	21.50	19.06	2.40
Mdn	1.86	0.83	1.03
% C 5	7.91	10.74	2.84
% L 5	26.51	29.34	2.83
% 6+	73.49	62.40	11.09
%10+	44.19	34.30	9.89

Rajasthan Royals	Bat	Bowl	Gap Factor
Mts/Won	14/7
Runs	2028	2202	-174
Overs	237.3	256.1	-18.8
Wickets	69	69	0
Avg	29.40	31.90	-2.52
r/o	8.50	8.60	-0.05
b/w	20.70	22.28	-1.62
Scoring rate	66.00	60.18	5.78
Boundary rate	16.90	18.48	-1.57
Mdn	0.39	1.56	-1.17
% C 5	6.56	11.67	5.11
% L 5	25.10	29.57	4.48
% 6+	67.18	70.43	-3.25
%10+	32.05	37.35	-5.31