One barrack expand in TvP is the most commonly used build now. Although there are different variations (e.g. Bomber’s delay refinery build), they still generally converge back to three barracks, one starport and one engineering bay by 9:30. By 10:00, Terran should be outside of the Protoss’s natural with marines, marauders and two medivacs. However, this timing is so typical that both Terran and Protoss know what to expect from each other. Then, what is the objective of Terran at this time frame?
TerranCraft 