It matched Roma's heaviest defeat in the competition, a 7-1 loss at Manchester United in the 2007 quarterfinals. "This is a fluke," Bayern coach Josep Guardiola said. "It's not normal to win 7-1."
But Bayern is starting to look like the Barcelona squad that Guardiola coached to two Champions League titles. The Spaniard took over Bayern last season and saw his club lose 5-0 on aggregate to Real Madrid in the semifinals.
"Last season we had the legs but not the mindset," Guardiola said. "We needed to decide things a split-second quicker and now we're doing that." Messi started an outstanding performance at Camp Nou by setting up Neymar in the seventh minute before the Argentine scored in the 24th.
"I am pleased with our game, in the first half we were by far the better side. We created a lot of chances and could have scored two more goals," Barcelona coach Luis Enrique said. "We could have pressed more in the second half. You have to finish out the match."
Eden Hazard netted twice and Didier Drogba scored his first goal since returning to Chelsea in the victory over Maribor. Drogba's two-month search for a goal ended in the first half shortly after replacing Loic Remy, who sustained a groin injury while netting Chelsea's opener in the 13th minute.
But Chelsea coach Jose Mourinho must now cope with Drogba as his only fit striker for Sunday's Premier League match at Manchester United, with Remy joining Diego Costa on the sidelines.