Nishikori won their only previous meeting. That was on grass in 2014 and he won in 3 sets.
Nishikori has been broken once in each match. He has faced a total of 5 break points in the tournament. Not even in form Bautista Agut has been able to take a set from him.
Monfils lost his first set of the tournament in the last round to Dimitrov. He didn’t face a single break point in his first 2 matches but faced 6 in the last round.
I favour Nishikori to win but think he will need 3 sets. He has looked the most solid on serve against strong opposition.
Back Nishikori if he is broken first.