Are Lazio Serie A favorites after beating Inter? PLUS: Barca's vital win, Juve look slow, Arteta fixing Arsenal

Missed any of the action around Europe this weekend? Have no fear: Gab Marcotti is here to catch you up with all the talking points in the latest Monday Musings. Jump to: Lazio are in title race | Liverpool win again | Massive result for Barca | Juve look slow in victory | Arteta works wonders with Arsenal | Real's defense falters vs. Celta Vigo | Don't worry about PSG | Give Mourinho some credit | Schick shines for Leipzig | Lessons from Bayern's win | Why wasn't Marega protected? Lazio are...