Bowling Average Explained: The Core Wicket-Taker Metric
How bowling average works as a cricket statistic — the formula (runs conceded divided by wickets taken), what a good vs poor bowling average looks like across formats, why bowling average is the primary summary metric for Test bowling quality, the limitations of the metric (wicket quality, team context), and the greatest bowling averages in Test history.
The Formula
Bowling average = (total runs conceded) ÷ (total wickets taken). A bowler who has conceded 2,500 runs and taken 100 wickets has a bowling average of 25.0 — they concede 25 runs per wicket taken on average. Unlike economy rate (runs per over) which measures control, bowling average combines control and wicket-taking into a single figure. A bowler who concedes many runs but takes wickets frequently may have the same average as a bowler who is economical but takes wickets infrequently — average alone does not distinguish them. This is why average is typically discussed alongside economy rate and strike rate to give a complete picture of a bowler's profile.
What Averages Mean
In Test cricket, a career bowling average below 25 is exceptional — world-class bowlers throughout history cluster in this range. An average of 25-30 is very good; 30-35 is solid; above 40 suggests a bowler who either lacks wicket-taking ability or concedes too many runs between wickets. The scale is different in limited-overs formats: ODI bowling averages in the 20-30 range are good (fewer opportunities per game); T20I bowling averages below 20 are elite. The greatest Test bowling averages in history belong to George Lohmann (10.75, Victorian era — different conditions), Sydney Barnes (16.43, early 20th century), and among modern bowlers, Malcolm Marshall (20.95) and Joel Garner (20.97) set the standard for sustained fast bowling excellence.
Context and Limitations
Bowling average is influenced by factors outside the bowler's direct control. Team context: a bowler in a dominant team faces more weak batting lineups (opponents who follow on, opponents demoralised by a large first-innings deficit) and can accumulate tail wickets more easily, lowering their average beyond pure skill. Pitch conditions: a bowler who primarily plays home matches on their preferred surface (a spinner on turning Asian pitches, a seam bowler in English swing conditions) accrues better averages than a bowler who always plays in conditions less suited to their style. Era: bowling averages were generally higher in the 1920s-40s due to uncovered pitches favouring bowlers, creating a selection bias when comparing across eras. Modern statistical adjustments attempt to control for these factors but raw bowling average remains the most widely cited summary statistic.
Frequently asked questions
Can a bowler's average improve as they age?
Yes — a bowler's average can improve (decrease) over their career if they become wiser in their craft, develop better variation, and bowl against more opponents they have studied. Fast bowlers often see averages deteriorate slightly after peak pace (30s) because raw pace is replaced by craft, which is less consistent. Spinners frequently improve with age — Shane Warne's average in his final 5 years of international cricket was lower than his overall career average, suggesting his skill continued to develop. Conversely, a bowler who takes many wickets early in their career against unfamiliar opponents may see average increase as opponents develop counter-strategies against their predictable approach.
Which bowler has taken 400+ Test wickets with the best average?
Among bowlers with 400+ Test wickets, Malcolm Marshall has the best bowling average at 20.95 from 376 wickets — just below the 400 threshold. Among bowlers who crossed 400 wickets, Glenn McGrath holds the best average at 21.64 from 563 wickets — an extraordinary combination of volume and quality. Murali (22.7/800) and Warne (25.2/708) follow. The achievement of maintaining a sub-25 average over 400+ wickets is extremely rare — only a handful of bowlers in Test history have achieved it — because sustaining elite performance across the volume of bowling required means consistently overcoming opposition adaptation and declining physical condition.
Does bowling average matter in T20 cricket?
T20 bowling average is less commonly cited than in Tests or ODIs because the format's short duration means sample sizes are small and the stat is noisier. A bowler can have an unusual match (facing particularly aggressive batsmen or particularly weak ones) that distorts their T20I average significantly. T20 analysts primarily use economy rate (runs per over) and batting average against the bowler as more stable metrics. However, T20 bowling average does have value in aggregate across many matches — a bowler with a T20I average below 20 over 100+ games has demonstrated genuine wicket-taking ability relative to runs conceded. The metric is useful for franchise team building decisions where a large data sample exists.