ARLINGTON, Texas — As much as Clayton Kershaw has dominated hitters throughout a glittering career, he has not silenced those who cite his lack of baseball’s ultimate accomplishment. With a gritty performance, plus one particular delivery home that will long be remembered, he hushed the skeptics and moved the Los Angeles Dodgers within a victory of their first World Series title since 1988. “He’s a phenomenal pitcher on the biggest stage,” reliever Blake Treinen said after Kershaw beat the Tampa Bay Rays for the second time in six days, a 4-2 win Sunday night that gave the Dodgers a 3-2 Series lead.