Once, wondering along Bourbon Street in New Orleans, I met a  magician. He was busy fleecing a throng of half-cut onlookers, plucking  their wallets from their pockets and pulling pennies from behind their  ears while he dazzled them with his slick schtick. I stopped to watch,  and he spotted me for a sceptic. It must have been the cocked eyebrow  that gave me away. "You're not easily impressed, sir?" he asked. I gave  him a wary grin. And with that he took off his hat and slapped it down  on the empty table in front of him. When he picked it up again, a  watermelon appeared.
I was flummoxed. The fruit, after all,  had been nowhere to be seen a split second beforehand, and was twice  the size of his bowler. He raised his eyebrow back at me and shot me a  smile that had the slightest hint of sneer in the way it curled upwards  at the edge of his lip.
And so to Saeed Ajmal, the man so memorably described in these pages by Barney Ronay as 
a "waddling doosra-goblin".  Ajmal, as everyone who has strayed anywhere near the back pages in  recent weeks will know, swears he has perfected a new delivery – the  teesra – which he was promising to unleash at some point against England  in this series.
At first the English reaction to Ajmal's  threat was akin to mine when I was confronted by the conjurer: before he  came on to bowl they were rolling their eyes and offering sceptical  seen-it-all-before smiles. "All the spinners that come up with these  'balls' so to speak, the names are highly unoriginal and not impressive,  but the 'teesra' is a stroke of genius," said Graeme Swann with a  chuckle. "Let's face it, as an off-spinner you can have a ball that goes  one way and one that goes the other and one that goes straight on."  Such straight talking. It was a little like Isacc Newton "unweaving the  rainbow", which is what John Keats accused him of doing when he split  white light into the colour spectrum.
The English media  too, were suitably sceptical. And understandably so, given how often we  were hustled by Shane Warne, who has long since admitted that most of  the new deliveries he swore he had developed before each series were  just so much hokum. The most infamous these was the Zooter, which was  just a regular old straight delivery. For what it is worth the 'teesra' –  or the third one, following as it does the doosra, which translates as  the 'other one' – does exist. Or so they say.
"I have  played his delivery in the nets," swears Ajmal's teammate Mohammad  Hafeez. "I can't tell more about it, he can better tell you. You will  judge it when he bowls that, I don't want to reveal that. He has this  new weapon and has command over it." Even Pakistan's captain  Misbah-ul-Haq couldn't resist playing along: "He has just developed  another delivery and bowling that very well. Let's see how England  batsmen tackle." Of course there is a little, OK a lot, of kidology to  all this. 24 hours ago the idea that any of England's batsmen are so  very mental fragile that such talk would cause them to be consumed with  self-doubt is a little laughable. But after their collapse in the  morning, it doesn't seem quite so funny.
The teesra was used by Saqlain Mushtaq in the days after his international career was over. 
He called it the Jalebi,  or sweet. It is, Saqlain says, bowled with something almost a leg-break  action, and the ball is flicked with the middle finger as it is  released. In theory it floats on to a fuller length than the batsman is  expecting and then skids with a little extra pace straight on off the  pitch. A little like a flipper. He once bowled Russel Arnold with it in a  match in the ill-fated and unofficial 20-over jamboree that was the  Indian Cricket League. And that, so far, as the record shows, is as much  success as he ever had with it.
As mystery balls go, it has nothing on the famous double-bounce delivery 
supposedly perfected by the Sri Lankan spinner Pradeep Mathew, which was said by the few who have seen it to have pitched on off, turned to leg, pitched again and broken back to the off (
read more about it here).
Having  seen Ajmal bowl in this match, the English expressions are now a little  closer to the one I was wearing when I saw that watermelon. Ian Bell  fell for a golden duck to a perfect doosra, and was left staring  slack-jawed at the place where the ball had pitched. And Strauss was  made to look like a rube by a ball that could just have been that  teesra. It floated up fuller than he thought, which would explain why he  thought he could pull it, and then it skidded straight on. Some of  Sky's commentators were convinced it was the teesra. Plenty of others  dismissed it as an off break that didn't turn. Later in the day Mike  Atherton thought he had identified another ball, fuller and faster and  delivered round arm, that was the one Ajmal had been working on.
Whether  you buy into it or not, we're all baffled. I've long since given up  trying to figure out how the conjurer did his trick with the watermelon.  After innumerable hours spent fruitlessly trawling chatrooms online I  resigned myself to the fact that I was beaten, and told myself that life  is richer if you leave room for a little magic here and there. England,  unfortunately for them, don't have that luxury.
MEANWHILE, IN OSLO …
The  Spin rose with a shiver this morning, rolling out of bed at 5am to  stumble down to the office in time for the start of play in the first  Test between England and Pakistan. After the mild mid-winter the cold  snap has struck, meaning that I'll have to break icicles off the  keyboard and scrape the frost off my computer screen before I can start  work on the season's over-by-over reports. Before we all start feeling  too sorry for ourselves though, we should spare a thought for the XI  intrepid members of Captain Scott's cricket club. Even as this week's  Spin email landed in your inbox they were taking to the ice in Oslo,  where it is currently seven degrees below zero, to play a game against  an Amundsen XI in commemoration of the 100th anniversary of Scott  arriving at the South Pole.
If you've read 
Harry Thompson's Penguins Stopped Play  (and if not, why not?) you will know all about the Captain Scott XI.  Thompson, author of the brilliant This Thing of Darkness, founded the  team a few years before he died of lung cancer. Their latest match is  designed to raise funds for the Roy Castle foundation, as well as  Cricket Without Boundaries, who do such sterling work raising Aids  awareness in Africa.
As Captain Scott XI member Gareth  Wilson puts it: "Knowing we've contributed to their cause will hopefully  give me a warm feeling inside when standing down at fine leg for 15  consecutive overs while suffering from mild hypothermia as a result of  exposure to the freezing conditions in Oslo."