The 28-year-old midfielder is one of the best players in the current Leeds squad and is one of the first names on the teamsheet.
However, the former Brentford star did not start the Championship match against Huddersfield at Elland Road on Saturday afternoon.
In fact, Diagouraga did not even come on as a substitute, as the Whites suffered a 4-1 defeat.
Evans has explained why he left the former Peterborough United man on the substitutes’ bench.
“Toumani was straightforward,” the Leeds head coach told The Yorkshire Evening Post. “He was struggling late in the game at Blackburn.
“He trained but to my eyesight he trained a bit gingerly so I wasn’t sure whether to put him out there from the start.”
Diagouraga, who joined Leeds from Championship rivals Brentford in the January transfer window, has created six chances in eight league appearances for the West Yorkshire outfit so far this season.
The midfielder has a pass accuracy of 87%, and has won three headers, four dribbles and six tackles.
Leeds are 13th in the Championship table at the moment with 47 points from 37 matches.