 Complete the following phrase:  This was the second NLCS in which the winning team never trailed during a game the other being in 2015 and the second postseason series in which the winning team scored first in every game and never relinquished a lead once taken the first being the 1966 World Series. This was also the first NLCS since 2015 to end in a sweep and the fourth best-of-seven NLCS to do so the others being in 2007 and 