I found this very interesting post at Baseball-Reference.com about Joe’s 5 hits and 7 RBIs game against the Royals two nights ago!
Credit to Baseball-Reference.com

Last night, Joe Mauer had 5 hits and 7 RBI while the Twins obliterated the Royals. Turns out this is quite a rare feat. Click through to see just how rare.

A player has had at least 5 hits and 7 RBI in a game just 44 times.

Here are the 10 most recent occasions:

Rk	Player	Date	Tm	Opp	Rslt	PA	AB	R	H	2B	3B	HR	RBI	BB	SO	WPA	RE24	aLI	BOP	Pos. Summary
1	Joe Mauer	2010-07-26	MIN	KCR	W 19-1	5	5	3	5	1	0	1	7	0	0	0.071	5.397	.238	3	C
2	Troy Tulowitzki	2009-08-10	COL	CHC	W 11-5	5	5	2	5	1	1	1	7	0	0	0.250	6.742	.408	4	SS
3	Victor Martinez	2004-07-16	CLE	SEA	W 18-6	6	5	3	5	0	0	3	7	1	0	0.130	6.116	.403	4	C
4	Shea Hillenbrand	2003-07-07	ARI	COL	W 14-6	5	5	4	5	1	0	3	7	0	0	0.620	6.925	1.142	4	3B
5	Casey Blake	2003-07-05	CLE	MIN	W 13-2	5	5	3	5	2	0	2	7	0	0	0.213	6.359	.604	6	3B
6	Shawn Green	2002-05-23	LAD	MIL	W 16-3	6	6	6	6	1	0	4	7	0	0	0.303	7.052	.433	3	RF
7	Jose Canseco	1994-06-13	TEX	SEA	W 17-9	6	6	3	5	0	0	3	8	0	1	0.233	6.547	.502	3	DH
8	Danny Tartabull	1992-09-08	NYY	BAL	W 16-4	5	5	3	5	1	0	2	9	0	0	0.273	6.697	.586	4	RF
9	Will Clark	1991-07-14	SFG	PHI	W 17-5	6	6	3	5	1	0	1	7	0	0	0.223	6.273	.805	3	1B
10	Tom Brunansky	1990-05-19	BOS	MIN	W 13-1	5	5	3	5	1	0	2	7	0	0	0.221	6.995	.722	4	RF

Provided by Baseball-Reference.com: View Play Index Tool Used
Generated 7/27/2010.

Recently I mentioned that over this same period, there have been 230 cycles. So it’s about 5 times rarer for Mauer to do what he did than to hit for the cycle. Since 1920 there have been 176 no-hitters of at least 9 innings, so that’s about 4 times rarer.

Another thing I noticed: Mauer’s performance yesterday had the lowest WPA of all of them going back to 1950. (We don’t yet have WPA values for games 1920-1949). That’s because by the time he came up in the first inning, the Twins were up 1-0 with a runner on third and no outs, already with a 67% chance of winning the game. Mauer’s single pushed it to 71%, but by the time he came up again, it was already 92%.

Shout out to Raphy (not Ralphy) for bringing this to my attention. He heard it discussed on Mike and Mike in the Morning on ESPN Radio.