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In Australian cricket until 1979 they had 8-ball overs!
By illegitimate, I presume you refer to a no-ball or a wide. Under current rules an over contains 6 balls. Some years back, 8-ball overs were used in Australia if nowhere else. For an over to be complete, 6-balls not including a wide or no-ball must be bowled. If an illegitimate ball is bowled, it must be rebowled. The most illegitimate balls bowled in one over was an over bowled by Curtly Ambrose in his final test on Australian soil which contained 9 no-balls - a total of 15 balls.
Shoaib Akhter
The first ball in the first cricket world cup was bowled by Madan Lal in 1975 Cricket World Cup.
the malinga bowled the last ball in the 2011 world cup
it's called a no ball
Spin and Fast
Shourn tait
block hole
A batsman is the person who has to hit the ball bowled at him by the bowler.
shoiab akhtar has bowled fastest bowl of 160+ km
Madan Lal bowled the first ball to Dennis Amiss of England in the 1975