After Sunday's games, Alex Rodriguez is sixth in the American League with a .354 average (minimum 40 at-bats).

But he's moved into first place on the Yankee Run Factor list, thanks to a six-RBI Saturday (including a grand slam.) Curtis Granderson, sixth in the YRF/G with a 1.056, made the biggest jump by increasing .413 runs produced per game. A three-homer, six-RBI week will do that to a fella.

Here is this week's report (with explanations below the chart): 

PLAYER G PA R RBI HR YRF/G YRF/PA
Alex Rodriguez 15 65 14 17 5 1.733 .400
Mark Teixeira 18 82 16 16 6 1.444 .317
Russell Martin 17 66 12 16 6 1.294 .333
Robinson Cano 18 78 11 14 4 1.167 .269
Nick Swisher 18 79 11 8 0 1.056 .241
Curtis Granderson 18 70 14 12 7 1.056 .271
Derek Jeter 18 82 12 5 0 0.944 .207
Eric Chavez 9 21 4 3 0 0.778 .333
Jorge Posada 17 67 7 11 6 0.706 .179
Brett Gardner 17 63 6 4 1 0.529 .143
Andruw Jones 6 16 2 2 1 0.500 .188
Gustavo Molina 1 3 0 0 0 0.000 .000
Eduardo Nunez 5 2 0 0 0 0.000 .000

What is the Yankee Run Factor? 

The Yankee Run Factor is a fairly simple statistical metric. It takes the "Runs produced" sabermetric created by Bill James and divides it in two different ways.

Equation 1

The first equation is R + RBI - HR / G = Runs produced per game, as indicated in the chart above as YRF/G.

Equation 2

The second equation is R + RBI - HR / PA = Runs produced per plate appearance, as indicated in the chart above as YRF/PA.

The Yankee Run Factor is updated every Monday | Past Yankee Run Factor reports.