BOSTON — A day after the Guardians’ hitters did very little, they did just enough to finish a successful stop in Fenway Park. With leadoff specialist and offensive spark Steven Kwan getting the day off, Cleveland built an early lead before holding off the Boston Red Sox 5-4 on a cool, rainy Thursday afternoon. Inserted into the leadoff spot, Andrés Giménez had two hits and drove in a pair of runs as the Guardians took three of four games from the Red Sox. The win improved Cleveland’s lofty road record to 10-3 and sealed its first series win in Boston…