Originally Posted by OrangePower
Or, one might argue that the age divisions are motivated by USTA's desire to provide more playing opportunities for the segment of the population that has demand. Older people generally have more time for tennis than younger folks who are busy establishing a career and raising a family.
The cynics amongst us might also argue that this is driven not so much by USTA's desire to serve, than by the realization of an opportunity for more revenue.
Either way, presumably there was demand from the 40-50 crowd for more playing opportunities, and this drove the reorganization of the age brackets.
Possible, though from the vantage point of 51, I can say that when I was 49 (under the old system, of course) our 18+ USTA team was mostly made up of 40 - 60 year olds, even though we could have had a bunch of 20 year olds, I suppose.