Previously only 10 degrees for fast bowlers and five degrees for spinners were permitted.
Only Shane Warne (626) and Muttiah Muralitharan (565), both spinners, have taken more Test wickets.
There have been quite a few spinners over the years who have played into their forties.
Against England's spinners, the required rate drifted to more than a run a ball.
Across the board, in all formats of the game, spinners are taking more wickets.
With Adil Rashid retained, to some raised eyebrows, that meant England had two specialist spinners.
And New Zealand could barely wait to introduce their own spinners when the hosts took strike.
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Mystery spinners can get you wickets when no one else can on flat wickets.
They were pegged back by the spinners as Muttiah Muralitharan took 2-41 from his 10 overs.
Spinners (and sliders) are all the rage these days, and the S710a does the design right.
He's an option but I wouldn't expect Trent Bridge, the pitch, to favour two spinners really.
The real focus will be on Matt Prior, especially if England do play both spinners.
There is experience, again, in the shape of the two spinners Harbhajan Singh and Anil Kumble.
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In addition to his concentration, he has improved the way he copes with the spinners.
And two of the club's spinners, Monty Panesar and Graeme White, left for Sussex and Nottinghamshire respectively.
England's innings had the necessary momentum and it was impossible for the spinners to exert any pressure.
Australian spinners Nathan Hauritz and Steve Smith struggled in the match, claiming just one wicket between them.
The system has prompted spinners to bowl a tighter, wicket-to-wicket line, and to spin the ball less.
Spinners Laker and Lock then destroyed the tourists with nine wickets between them, Australia bowled out for 162.
Pakistan were quickly 41-2 with two new batsmen at the crease, allowing Collingwood to turn to his spinners.
The rest of the bowling remains so-so, the normally reliable spinners partly muted in Zimbabwe by unresponsive surfaces.
It's a reflection of the pitches - they have offered very little for the pace bowlers and spinners.
Spinners Ashley Giles and Gareth Batty combined to peg Sri Lanka back after they had eased to 72-1.
Then the spinners put their stamp on proceedings, Kevin O'Brien dragging slow left-armer Pragyan Ojha's first delivery on to his stumps.
Established in 1790, Hacienda Pinsaqui was originally a textile enterprise that employed more than 1, 000 weavers and spinners.
Amla was no slouch at the other end, showing excellent footwork to take on spinners Chandana and Rangana Herath.
The result is that LBW has replaced caught as most spinners' main threat.
But they collapsed from 70-2 to 82-8 as the middle order struggled against spinners Shaun Udal and Murali Kartik.
"Stuart gives us the ability to play two spinners if needed, " Hohns said.
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They bowled well up front and then both their spinners also did well.
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