I think USA Track & Field needs to rethink how they pick the 4x100 runners. Just like the USA men's basketball no longer picks the 12 best but selects for the best team; USA Track & Field needs to select for the best relay team and not the four or five fastest runners. USA has botched hand offs in the last 4 or 5 Olympics. USA Track & Field needs to select sprinters that are willing to work on baton exchanges and commit to being together for 12 to 18 months. Even if you have the 4 fastest 100m sprinters if they aren't familiar with and practice handoffs with the other 4x100 members, you wont have a good 4x100m relay.