Alden Gonzalez of ESPN efficiently and effectively describes the problem with the game one NLCS start of Walker Buehler:

Now, it seems, May’s resilience might be imperative. On Monday night, in a 5-1 loss to the Atlanta Braves to open this National League Championship Series, the Dodgers used May against eight batters — partly because Walker Buehler once again wasn’t as efficient as he was effective, further complicating matters in a best-of-seven series that doesn’t include off days and could very well go the distance.

ESPN.com

During the broadcast, the commentators mentioned that Buehler would rather walk a batter than give up a hit. The Braves played into that last night, forcing Buehler to make that choice more often that he likely wanted, pushing his pitch count to 100 in the sixth inning. Suddenly, the bullpen game seems a little more precarious.

There are no days off, and the roster can’t be manipulated. During the regular season, general managers can move relievers in and out of the minors to keep the pen fresh. Barring injury, that can’t happen in this series. Buehler, in his next start, may need to get out of his comfort zone of hit avoidance and go after batters to try to retire them quickly. That may lead to trouble, too.