centro needs to watch lagat. they both have great kicks, but lagat always sets himself up perfectly for the break, when it comes, by jumping out into 2nd or 3rd place at the very beginning of every race and then setting up to the outside of lane one to avoid getting boxed when the pace is picking up near the end. So, lagat is always in perfect position to kick at the end. centro, by contrast, has too often let himself get way back with less than 1/2 M to go. in this case, he forced himself to move all the way from last into contention, wasted a lot of his energy in doing that and then could not hang with the leaders. he himself said that had he been able to stay closer to the leaders at world's outdoor before the bell lap, he might have been able to get the gold. In addition, he did not show many signs, other than that sub 3:54 early on, that he was near 100 percent fitness this indoor campaign. Outdoor's when it really matters and if healthy he should get there. He is a real gamer and will figure out the tactics, which are simple in theory but require great fitness and willpower to execute.