The two handler defenders are mark and poach. The front of stack caps called "one and two" are R3 and R4. R4 "one" is on the open side and R3 "two" is on the break side. R5 and and R6 are wings; R5 is very close to the stack but R6 is more in the cutting space. R7 is deep.
In a sidestack, it would look more like this.