Mika Koivuniemi and Carolyn Dorin-Ballard remain the points leaders with two tournaments to go in the World Bowling Tour, the World Tenpin Bowling Association reported. The top three men and top three women will be invited to compete in the WBT finals during the PBA World Series of Bowling in November. Koivuniemi was the only player among the men's or women's top three to compete in the most recent WBT...