There is no set number of times. The umpire will inspect it occasionally to see if it's been cut or scuffed or oiled or crushed by a bat. Any of those would impart unnatural action to the ball and give an unfair advantage to the pitcher.
There is no limit to how many pitches can be thrown in a game.
45 game winning drives
65 After being ejected in a game against the Dodgers on 7/10/2010.
The New York Yankees have never been the victims of a perfect game thrown by an opposing pitcher.
your chances of death are five times greater than if you are not thrown from the vehicle
Way more than Asomugha got thrown at.
it's happened many times.
Through games played on April 12, 2010 Cox has been tossed 153 times in his career, an MLB record.
until it gets thrown out
3
Your chances of being killed are five times greater if you are thrown from the vehicle.
6