As the Miami Heat and Indiana Pacers prepare for Game 1 of the Eastern Conference semifinals on Sunday, a handful of TV and Internet analysts have noted that the Pacers match up well against the favored Heat. Indiana has the size and talent to slow Miami’s march to the conference finals, they say, and perhaps pull off a stunning upset. And for all of Indiana’s athletic wings and plucky role players, the team’s chances to advance past the second round rest on one Pacer: David West.