Gameday 1 marked the long-awaited return of proper Champions League soccer, and it nearly looked like Messi and Co. never left.
Last year, Real Madrid captured its third straight Champions League title.
"It's hard [to explain]", he said.
Messi, now Barcelona's captain after Andres Iniesta's departure, looks to have put another disappointing World Cup behind him - he scored once as Argentina lost in the last 16 in Russian Federation.
Mike Zimmer gives ruthless answer on Daniel Carlson cut
Carlson sent 9 of 10 kickoffs for touchbacks, and the other one was a squib returned for 8 yards to Green Bay's 31. "I don't know. Carlson was cut after missing three field goals in the Vikings' 29-29 tie with the Packers on Sunday.
"I do not care who gets Leo's shirt after the game".
"Messi, like all of us, is really motivated to win big things [this season] and the Champions League is one of them".
Lozano was one of Mexico's better performers over the summer and continues to shine for his club side as well.
Barcelona coach Ernesto Valverde said PSV, on paper no match for his side, deserved respect. "We haven't won it in a few years but we have the players and we are hungry to go out there and win it". Him and Ousmane Dembele have settled into the squad, so they should ensure there isn't as much reliance on Messi to produce moments of individual brilliance.
In the other Group B game played on Tuesday, Inter Milan scored two late goals, including a stoppage-time victor, to mark their return to the Champions League with a 2-1 comeback victory against Tottenham.