i actually work in baseball, so it isnt particularly difficult for me to track this info down. 
 
you are right that the radar guns that fans see in the ballparks are a lie, but there are many more than 10% of the pitchers in major league baseball that throw over 90. 10% would be roughly 1 person per major league team, and I can name off the top of my head at least 30 pitchers who consistently throw 90.
		 
		
		
		
		
		
		
		
		
			
			
			
			
			
			
			
			
			
			
				
			
			
			
		 
	
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