When I've seen Mauer's RISP numbers quoted, it's usually a retaliatory statement in response to "herp derp Mauer doesn't drive in enough runners to make $20m herp derp". It's refuting a misconception, not attempting to put weight into RISP numbers.
That's my experience, anyway. YMMV.
Correction to what I wrote. That quote came from Gleeman, not Fangraphs, so apologies on that. Wasn't purposely trying to deceive right there, just thought I had gotten it from Fangraphs...
Mauer's career numbers with RISP are quite a bit better than his normal numbers though. 20 points in BA, 55 points in OBP, 30 points in slg%
Edited by ThePuck, 12 February 2013 - 12:06 PM.