Bowling average

For information on average inTen-pin bowling,seeGlossary of bowling § Other bowling terms and jargon.

Of bowlers who have bowled at least 600 balls inTest cricket,George Lohmannhas the lowest career bowling average, 10.75.

Incricket,a player'sbowling averageis the number ofrunsthey have conceded perwickettaken. The lower the bowling average is, the better thebowleris performing. It is one of a number of statistics used to compare bowlers, commonly used alongside theeconomy rateand thestrike rateto judge the overall performance of a bowler.

When a bowler has taken only a small number of wickets, their bowling average can be artificially high or low, and unstable, with further wickets taken or runs conceded resulting in large changes to their bowling average. Due to this, qualification restrictions are generally applied when determining which players have the best bowling averages. After applying these criteria,George Lohmannholds the record for the lowest average inTest cricket,having claimed 112 wickets at an average of 10.75 runs per wicket.

Calculation

A cricketer's bowling average is calculated by dividing the numbers ofrunsthey have conceded by the number ofwicketsthey have taken.The number of runs conceded by a bowler is determined as the total number of runs that the opposing side have scored while the bowler was bowling, excluding anybyes,leg byes,orpenalty runs.The bowler receives credit for any wickets taken during their bowling that are eitherbowled,caught,hit wicket,leg before wicketorstumped.

$\mathrm {Bowling~average} ={\frac {\mathrm {Runs~conceded} }{\mathrm {Wickets~taken} }}$

A number of flaws have been identified for the statistic, most notable among these the fact that a bowler who has taken no wickets cannot have a bowling average, asdividing by zerodoes not give a result. The effect of this is that the bowling average cannot distinguish between a bowler who has taken no wickets and conceded one run, and a bowler who has taken no wickets and conceded one hundred runs. The bowling average also does not tend to give a true reflection of the bowler's ability when the number of wickets they have taken is small, especially in comparison to the number of runs they have conceded.In his paper proposing an alternative method of judging batsmen and bowlers, Paul van Staden gives an example of this:

Suppose a bowler has bowled a total of 80 balls, conceded 60 runs and has taken only 2 wickets so that.. [their average is] 30. If the bowler takes a wicket with the next ball bowled (no runs obviously conceded), then [their average is] 20.

Due to this, when establishing records for bowling averages, qualification criteria are generally set. ForTest cricket,theWisden Cricketers' Almanacksets this as 75 wickets,whileESPNcricinforequires 2,000deliveries.Similar restrictions are set forone-day cricket.

Variations

A number of factors other than purely the ability level of the bowler have an effect on a player's bowling average. Most significant among these are the different eras in which cricket has been played. The bowling average tables in Test andfirst-class cricketare headed by players who competed in the nineteenth century,a period whenpitcheswere uncovered and some were so badly looked after that they had rocks on them. The bowlers competing in theHowa Bowl,a competition played in South African during the apartheid-era, restricted to non-white players,during which time, according toVincent Barnes:"Most of the wickets we played on were underprepared. For me, as a bowler, it was great."Other factors which provided an advantage to bowlers in that era was the lack of significantsafety equipment;batting gloves andhelmetswere not worn, and batsmen had to be warier. Other variations are caused by frequent matches against stronger or weaker opposition, changes in thelaws of cricketand the length of matches.

Records

Completed Test careerbowling averages

Charles Marriott(ENG)	8.72
Frederick Martin(ENG)	10.07
George Lohmann(ENG)	10.75
Laurie Nash(AUS)	12.60
John Ferris(AUS/ENG)	12.70
Tom Horan(AUS)	13.00
Harry Dean(ENG)	13.90
Albert Trott(AUS/ENG)	15.00
Mike Procter(SA)	15.02
Jack Iverson(AUS)	15.23
Tom Kendall(AUS)	15.35
Alec Hurwood(AUS)	15.45
Billy Barnes(ENG)	15.54
John Trim(WI)	16.16
Billy Bates(ENG)	16.42
Source:Cricinfo Qualification: 10 wickets, career completed.

A. N. Hornbyis one of three players to have a bowling average of zero in Test cricket.

Due to the varying qualifying restrictions placed on the records by different statisticians, the record for the lowest career bowling average can be different from publication to publication.

Test cricket

InTest cricket,George Lohmannis listed as having the superior average by each of theWisden Cricketers' Almanack,ESPNcricinfoand CricketArchive. Though all three use different restrictions, Lohmann's average of 10.75 is considered the best.If no qualification criteria were applied at all, three players—Wilf Barber,A. N. HornbyandBruce Murray—would tie for the best average, all having claimed just one wicket in Test matches, without conceding any runs, thus averaging zero.

ESPNcricinfo listBetty Wilsonas having the bestWomen's Test cricketaverage with 11.80,while CricketArchive acceptMary Spear's average of 5.78.

One Day Internationals

InOne Day Internationals,the varying criteria set by ESPNcricinfo and CricketArchive result in same player being listed as holding the record. ESPNcricinfo has the stricter restriction, requiring 1,000 deliveries whereas CricketArchive has more relaxed requirement of 400 deliveries. By both measures,Sandeep Lamichhaneis the record-holder, having claimed his wickets at an average of 18.06.

Inwomen's One Day International cricket,Caroline Barrstops the CricketArchive list with an average of 9.52,but by ESPNcricinfo's stricter guidelines, the record is instead held byGill Smith's 12.53.

T20 Internationals

The record is again split for the two websites forTwenty20 Internationalcricket. In this situation ESPNcricinfo has the lower boundary, requiring just 30 balls to have been bowled,Dhruv Maisuria's average of 9.46 holds the record using those criteria. But the stricter 200 deliveries required by CricketArchive results inAndre Bothabeing listed as the superior, averaging 8.76.

First Class cricket

Domestically, the records forfirst-class cricketare dominated by players from the nineteenth century, who make up sixteen of the top twenty by ESPNcricinfo's criteria of 5,000 deliveries.William Lillywhite,who was active from 1825 to 1853 has the lowest average, claiming his 1,576 wickets at an average of just 1.54. The leading players from the twentieth century areStephen DraaiandVincent Barneswith averages of just under twelve,both of whom claimed the majority of their wickets in the South AfricanHowa Bowltournament during the apartheid era.

See also

• Batting average (cricket)
• Strike rate

Bibliography

• van Staden, Paul J. (January 2008).Comparison of bowlers, batsmen and all-rounders in cricket using graphical displays(PDF).Pretoria:University of Pretoria,Faculty of Natural and Agricultural Sciences, Department of Statistics.ISBN978-1-86854-733-3.Archived fromthe original(PDF)on 1 July 2014.Retrieved6 January2013.