Chelsea vs. Barcelona instant analysis

All the previews pose just one question: how can Chelsea beat Barcelona? All right, two questions, though they're often treated as the same thing: how can Chelsea stop Lionel Messi? After the season Chelsea has had -- even with the recent upturn -- reaching the Champions League final at Barcelona's expense would rank among the club's most significant achievements. See what happens in the first leg from 2.30 p.m. ET.