lol at the number of experiments Allegri conducted with the front 3 in a single game. He always tests things till Nov...but does it even in the 2nd biggest Serie A fixture of the season.

Started off with 4312 and defending with that shape too which was bad. Then 433 with Dybala at RAM. After that, played Ronaldo at LM in defense in 1st half.

Started off with Ronaldo on right, Dybala in a 9 role in 2nd half. Then finally 433/451 with Berna and MM on the flanks.
This 3 striker system obviously isn't gonna work. You need Berna/DC alongside two of them. Testing things out in case of injuries later?
I hope CR7-Dyb-Berna with Dybala as F9 is next.