Fred plays these TBs really poorly, he's actually been not bad for the first 12 games of the last two sets.
Is it better for Fred to lose in 3 and be ready to beat Giovanni or to play 5 sets and then be tired?
To lose in three is better I think, the second and third sets were pretty even, and if he can play this well against Giovanni he will have a solid chance. To waste his energy chasing an unlikely victory, especially with the doubles point so important, wouldn't seem to me to be very smart.
I hope that 5th rubber is Milos v. Campozano, though
Especially since Fred's play in big moments hasn't been very good in this match