There are no bowlers in the American Bowling Congress at this time. In 2005 the American Bowling Congress, Women's International Bowling Congress and the Young American Bowling Association were disbanded to form a single entity called the United States Bowling Congress.
There is a Professional Bowlers Association which conducts tournaments and events for pro bowlers. There are also bowling leagues that allow amateur bowlers compete on lane conditions similar to what the professionals use during pro tournaments. At this time, there is no league specifically and selectively for Pro Bowlers.
Many professional bowlers have sponsorship arrangements.
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The Ravens had 8 Pro bowlers in 2003!!
Usually in international cricket there will be 7 batters and 4 bowlers, but this can change.
700,000
The are about 300 professional bowlers in the USA registered with the Professional Bowling association, that has about 4300 members world wide. Bowling has greatly declined since its heyday in the 1970's when professional bowlers were akin to rock-stars today.
That depends on your league's rules. For example, in my league we take 90% of the difference from 240. This is not common, but we have a lot of high average bowlers (not me) on our league. Many leagues may use 200. So, 240 -141= 99. 90% of 99 = 89.
There isn't any collection point of statistics for all leagues to obtain an answer. Based on the level of the sport over this past decade as well as equipment improvements, you would probably see around a 5% of league bowlers averaging 200 or higher.
bowlers' - ie The bowlers' shoes were taken.
A 300 game counts anytime you bowl it. However if it is not santioned you dont get all the perks and recognition. I know bowlers that average 150 that have bowled a 300 and bowlers with 200+ average that have not.
Only games bowled under a sanctioned league may receive recognition by the sanctioning organization that the league sanctioned with. For example, if the league is based in the US and did not sanction in USBC then scores will not be recognized for any USBC awards, including the 300 ring. Even if bowlers who are members of a non-sanctioned league bowl a 300, they can not qualify for any USBC awards if the league did not sanction.