Juventus's current top fourth position standings still not secure yet and they must take three points against Lazio to make easily for qualifying to UEFA Champion League next season, in other side Lazio won't to finish in this season outside from Europe League or Champion League spot standings after dropping to 9th place. Igor Tudor have difficult challenge bring back Lazio to be top fourth teams with several matches left.
I see bringing Lazio to fourth place as a truly impossible mission, there are too many contenders and many are decidedly better than Lazio in terms of performance. Unfortunately Lazio has this enormous flaw and is a very inconsistent team, they manage to play good games against the big teams perhaps, and then lose against the bottom of the table.
I never bet on Lazio. In the past I didn't even bet on Inter matches, but today Inter is a different team.
Even I don't believe that Lazio will be able to qualify for the next Champions League, as you say, they are a very swinging team and therefore I find it almost unlikely that they will be able to make up the 11 points they have behind Bologna, it might be feasible to qualify for the next conference league or Europa League but they will have to sweat a lot