-----------------------------------
Crowe dropped a delivery from Abdul Qadir at his feet and bent down to pick it up and lob it back to the bowler. "It was totally mutilated on one side with two or three deep scratches gouged out," he said. "I complained to the umpires but they did nothing."
Later in the day the ball went out of shape and was changed. As it was thrown to the boundary by the umpires, Willie Watson and Mark Priest rushed to intercept it. "It bore no resemblance to a cricket ball," Crowe claimed. The pair took it back to the changing-room but, so Crowe noted, Intikhab Alam, the Pakistan manager, came in and took it and it was never seen again.
Chris Pringle, at the time New Zealand's opening bowler, decided to take the law into his own hands. "There was something going on," he recalled in his autobiography Save The Last Ball For Me. "And whether what I did was the right or wrong way to make the ball look as it did in the next Test, I had to try it."
After another resounding defeat at Lahore, several of the New Zealanders experimented in the nets with scoring one side of an
old ball with bottle tops. "With that technique, even guys like Mark Greatbatch and Martin Crowe were swinging the ball miles in the air," Pringle wrote. "We practised long and hard in the nets and were quite excited about the results we were getting with it." Crowe admitted that he ran in to bowl his normal inswingers "only to see the ball curve the other way ... I'd never bowled outswingers in my life!"
On the morning of the first day of the final Test at Faisalabad, Pringle decided to put what he had learned into practice. He found an old bottle top, cut it into quarters, covered the serrated edge with tape, leaving a sharp point exposed. At the first drinks interval the umpires did not ask to look at the ball and, with Pakistan making sedate progress,
Pringle started scratching the ball with the bottle top. Pakistan crashed from 35 for 0 to 102 all out. Pringle finished with his Test-best figures of 7 for 52.
"
Neither umpire showed any concern or took any notice in what we were doing even though, at the end of the innings, the ball was very scratched," Pringle noted. "One side was shiny but there were lots of grooves and lines and deep gouges on the other side. It was so obvious. It was ripped to shreds ... one side of the ball had been demolished. The umpires were walking across to each other and talking quite a lot. I sensed that they could tell what was going on ... but they didn't want to get involved in anything controversial."
However, while the men in white remained implacable, others were wise to what was happening. Pringle recalled that as he left the stadium after taking his seven wickets on the first day, a local dignitary tapped him on the shoulder and said: "Pringle, it is fair now. Both teams are cheating."
https://www.espncricinfo.com/story/as-old-as-the-hills-259676
--------------------------------