User blog comment:Firefist553/the 4th strongest/@comment-74.69.178.242-20110518003555

And the fourth strongest at this point could actually be Usopp. Think about it, out of all the SH's other than the top 3 he was the only one to go threw intense physical training. Nami enhanced her climatact, and learned more about weather, and Chopper probably enhanced his rumble ball to go to another level but Usopp was the only one who actually had to fight to survive