Theis only goes in to spell them when Giannis is on the bench. We know Theis will have a negative point differential, that is a given.
Of course Tatum having a good game will offset how many more points Giannis might have since Rob is out, but I can't stomach another Playoff Bubble game of seeing Giannis (or even Lopez) dominate Theis. Esp if Theis is crazy enough to shoot and miss a 3. We can't have a lot of empty (1 and done) possessions now that Rob can't grab our boards.