AVG OBP SLG OPS
.340 .454 .501 .955
Those are simply spectacular numbers. Not only does he hit with RISP, he hits for power with RISP. Those weren't pulled out of anyone's "arse," those are Joe Mauer's actual numbers. http://sports.yahoo.com/mlb/players/...r&type=Batting
Edit to add: stats calculated from data on the page linked above, of Mauer's 511 career RBIs, 419 of those RBIs were with RISP. That's 82% of all of his RBIs.
In 2008, he was the AL leader in Sac Flies: http://www.baseball-reference.com/le...-leaders.shtml
Bottom line, it's clear that when Joe Mauer has had opportunities to drive in runs, he's done just that at a very, very impressive rate.
Edit again to add: Not that it matters remotely, but I'm nowhere near a "20-something," so before you try to get back on your high horse...