Boundary Positions: Third Man / Fine Leg / Deep Cover

Deep positions (third man, fine leg, deep cover, deep midwicket, long-on/off) that turn fours into twos.

MCC's Laws (first codified 1744, current 2017 edition) set the 22-yard pitch and playing-area dimensions cricket still uses today.

Anticipate via bowler's plan; curved approach toward the rope; underarm relay to keeper.

T20 field-setting hinges on which two of these positions go inside the ring.