strike rate

Short definition from Wiktionary

Noun

1. 1
   The number of runs of a batter divided by the number of balls faced.
2. 2
   The number of runs scored by a batsman per 100 balls faced; the number of balls bowled by a bowler divided by the number of wickets taken.
3. 3
   Sales success as a ratio of the number of customers to the number of potential leads who were approached.