Venus probably has the game to be a top-200 player but the 28-year-old has made the economic decision to focus on doubles.
Finn Tearney has rocketed almost 1000 places up the world rankings to 362 but still has a long way to go, 28-year-old Rubin Statham is in the twilight of his career, and Artem Sitak and Marcus Daniell are now doubles specialists.
The vitality of New Zealand tennis at professional level is not a new topic but is an ongoing concern because the sport needs local heroes.
They also create some of the best memories - and drama - at Stanley Street. No one who was there will quickly forget Venus' win in January, where the crowd would have lifted the long-proposed roof when he hit the game-winning backhand after saving several match points.
That night almost matched the fervour created by Erakovic's stunning run in 2008, when she beat two top-20 players on the way to the semifinals.
If diagnosing the problem is simple, finding a solution is far more complicated. Great Britain - with a budget at least 50 times greater than Tennis New Zealand - have two top 150 players, aside from the self-made talents of Andy Murray.
Australia's massive investment has started to pay dividends only in the past few years and the United States, for all their resources and infrastructure, have just four players in the top 50.
But that doesn't mean it is impossible and Tennis New Zealand, along with Tennis Auckland, need to focus on that area as a priority.