Originally Posted by Commander
2. Also, I bet grip could be related. I think we've felt the difference between gripping the bar lightly and trying to squeeze the life out of the bar. The same weight on the bar can feel much easier when squeezing the bar hard. However, if your grip is already fatigues from multiple deadlift sets, then your bench would be effected.
this ^^. try using straps on deadlifts. also i always do deadlifts at the end of my workout...as after that i have nothing left to do anything in the gym even driving my car back is a big task.. deadlifts if done with decent weights are very taxing on entire body.