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For the first fixture, I will give it to Roma, This is because Bologna do not seem like they have the capacity to defeat Roma, even if I want to judge them by their past performances in the previous season, they are not a match with Roma and cannot do as much with Roma so I think it is mostly better that we just maintain a regular expectation from both team because even Roma I will not advise we throw our full weight of expectations on them all at once.
If it was in the past 3 Serie A seasons, I would have agreed with you that AS Roma will beat Bologna, but with how Bologna's performance has dramatically improved, I refuse to accept that AS Roma will beat Bologna even though the bookmakers favor AS Roma to beat Bologna. In my opinion, this AS Roma vs Bologna match is likely to end in a draw, and if I were to place a bet on this game, I would play both teams to score because that is the most possible option this match can produce.
Considering the fact that in the last four meetings between these two teams, it seems Bologna can't be underestimated. Honestly I still find it difficult to choose a betting option. On the one hand I believe Gasperini can be relied on with Roma but on the other Bologna has the ability to repeat its success.
The BTTS odds are also quite high at 1.89, meaning the possibility of one team failing to score, a goalless draw, or a narrow victory. That what going through my mind right now.