Federer didn't play Clay season in 2017
Good point.
Fed, 2014-2015, excluding clay:
112-14, .889, overall
29-8, .784 vs top 10
2017-2018
59-5, .922 overall
15-2, .822 vs top 10
However, Fed didn’t play Djokovic in 2017-2018
Excluding Djokovic and clay, Fed from 2014-15
96-8, .923 overall
23-2, .920 vs top 10
Fed looks nearly the same without a healthy Djoker.
However:
2014-2015 Fed was 1-1 vs Nadal.
2017-2018 Fed was 4-0 vs Nadal
And the Nadal from 2017-2018 was far better than the 2014-2015 Nadal.
I still give 2017-2018 Fed an edge over 2014-2015 Fed. I think that 2014-2015 Fed maybe splits with 2017-2018 Nadal if he is lucky.
2015 Nadal was completely out of form. Fognini was 3-2 vs Nadal, including a come-from-behind 5 set win over Rafa at the USO.
Fed’s revamped backhand made the difference against Nadal. It would be awesome to see an in-form Djokovic face an in-form Djokovic at the USO.