Sure. I've posted in this thread already.
The graph multiplier has been accepted, but we only applied it to attack potency, because at the time I didn't want to have to argue for speed and lifting strength on the same thread. I'll do that in this thread. I personally don't think it's that controversial, but I'll hear out what others...
vsbattles.com
TLDR: It is literally stated by the narrative itself that Saitama's "abilities / power" is growing exponentially, and we literally see blatant growth in both his strength and speed. We also know that Garou, the person he is fighting, literally gains the power and speed of people he copies, and is constantly copying Saitama to remain equal to him, and yet still gets outpaced as Saitama grows by an amount that is relative to the growing strength gap between them.
Even still, due to wiki standards, it isn't enough because of the marginal inconsistencies with how speed gaps are treated (Something DxD is FAR worse at), and because it isn't explicitly stated that his speed is also growing exponentially.