The Clue Bowler's speed, say
The Answer PACE
The answer "PACE" fits the clue "Bowler's speed, say" because it refers to how fast a bowler delivers the ball in cricket. In this sport, the pace of the delivery can affect the game's outcome. A bowler with good pace can make it harder for the batsman to hit the ball. Therefore, "PACE" is a perfect word to describe the speed of a bowler.