The WTA 125K series or WTA 125s is an international series of professional women's tennis tournaments organized by the Women's Tennis Association since 2012. Sometimes called the WTA Challenger series (in analogy of the men's ATP Challenger Series) it is the second highest level of women's competition, right below the top-tier WTA Tour, and just above the ITF Women's Circuit tournaments. Players who succeed in the WTA 125s earn sufficient ranking points to become eligible for the main draw or qualifying draw entry of WTA Tour tournaments. Titles and losses at a WTA 125K event are separately counted from a player's WTA Tour results and corresponding head-to-head statistics.