The 1-1 count is the crossroads in the hitter-pitcher matchup. It's the difference between a batter moving to the edge of the two-strike abyss or getting ahead 2-1 and being able to anticipate the type and location of the next pitch.
Here are the results for all MLB hitters this season after each count.
1-1 became 1-2 BA: .188 OBP: .241 SLG: .283 OPS: .524
1-1 became 2-1 BA: .263 OBP: .398 SLG: .423 OPS: .821
What do the stats tell you? Get ahead of hitters in the count, get ahead of hitters in the count, get ahead of hitters in the count!