Three game win streak since JJ Kelly has been a regular in the starting lineup, FWIW.
We have three five man lineups with a positive +/- (minimum 25 possessions) and Kelly is in 2 of 3 of them. All three are within a point/two points of each other.
Breath / Hadaway / Kelly / Pavs / Sheldon = +8
Elliot / Hadaway / Sheldon / Pavs / Simmons = +7
Elliot / Hadaway / Kelly / Pavs / Simmons = +6
That +7 group's played against the hardest opponent lineups though by a pretty healthy margin.