EXTRA BASES: As part of their campaign to get Clayton Kershaw elected to the All-Star game, the Dodgers have partnered with the Boston Red Sox. The Dodgers are telling their fans to cast their American League Final Vote ballots for Xander Bogarts of the Red Sox; the Red Sox, in exchange, are asking their fans to vote for Kershaw. … Left-hander Ian Thomas was recalled from triple-A Oklahoma City to add a fresh arm to the overtaxed bullpen. Eric Surkamp, who pitched 31/3 innings of relief the previous night, was optioned to triple A. … In Baseball America's midseason rankings of the sport's top 50 prospects, Dodgers minor league infielder Corey Seager was No. 1. Three other Dodgers prospects made the list: Julio Urias at No. 4, Hector Olivera at No. 16 and Jose De Leon at No. 20. … Don Newcombe, a special advisor to the team, was taken from Dodger Stadium to a nearby hospital Monday. Newcombe, 89, was "resting comfortably," according to the Dodgers, who offered no other details.