To ball a jack refers possibly to the action of risking a shot in Boules, or Bocce or its sister game Petanque. The jack in either case is the smaller ball for which the goal of the game is to either throw your team's ball closest to it, or to knock away your opponent's ball. To hit the target ball to another location, or to ball the jack, is to alter the focus of the gameplay.
In closing, Veeva is an interesting company to watch, since it is specifically using cloud-based software to improve the efficiency of life science companies.
Veeva is currently in second place with 30%, while Oracle is in third with a 14% share. The big issue is that Cegedim, Veeva, and Oracle rely on a shared pool of sales representatives from global pharmaceutical companies.