A bigger back with this

T-bar row-10 reps
SUPERSET WITH
Narrow grip lat pulldown-6 reps ( make sure the weight is very heavy for 6 reps )

Rest 90 seconds and repeat 4 more rounds


Decline straight bar row-10 reps
* Set up a decline bench in front of a cable pulley. Put the cable at about hip height. Lying face up on the bench grab the straight bar from behind you and pull the bar towards your thighs keeping your arms locked out and straight.
SUPERSET WITH
Decline dumbbell one arm row-10 reps
* Hold a dumbbell in your right arm and put your right leg out to the side for support. Place your left leg back on the top of the bench. Row the weight up from the floor. The dumbbell should start from the lowest end of the decline bench near the floor.

Rest 90 seconds and repeat for 4 more rounds