In cricket in the early 1760s, there was an evolutionary transition from the sport's "pioneering phase" to its "pre-modern phase" when bowlers began to bowl pitched deliveries by pitching the ball towards the wicket instead of rolling or skimming it along the ground as they had previously done. The essential bowling action was still underarm but the introduction of a ball travelling through the air coupled with a bounce was a key point of evolution in the sport's history, especially as it was the catalyst for the invention of the straight bat, which replaced the old "hockey stick" design. It was the first of three keypoint evolutions in bowling: the others were the introduction of the roundarm style in the 1820s and overarm in the 1860s.