From curveball + -er. <span class="searchmatch">curveballer</span> (plural <span class="searchmatch">curveballers</span>) (baseball) A player who throws curveballs....
<span class="searchmatch">curveballers</span> plural of <span class="searchmatch">curveballer</span>...
fastball, split-finger fastball, sinker, screwball, softball, knuckleball <span class="searchmatch">curveballer</span> throw someone a curveball pitch in baseball unexpected turn of events...