He was fine until he wasn't. Probably up to the 50th minute? That said, we're in a shit position in midfield tbh, there is no great solution.
Brozovic was mediocre today and set up to fail playing as AM. No clue what the fuck Conte was thinking with that bullshit. Just play a 352 at all times unless Eriken is playing. Barella was obviously only back from injury so it's not fair to really blame him but he was mediocre as well.
Regardless, it's Conte who must take the blame for a lot of today. Even playing Brozovic as DM and instructing the midfielders to pack in tight would've done a lot to mitigate Roma's midfield superiority. Instead, we had this 20m gap between the front 3 and the CM's. However, that is always the case when playing 3412 because Conte hasn't yet worked out the mechanics of that system, especially in defense.
Also, it's hard to know whether to blame Conte & his staff or some insane bad luck, or whether these players are just fucken crocked. Vecino reportedly needs knee surgery, and when the fuck did it just become a known thing that the season was over for Sensi? Fucking cunts. The whole lot of them.