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# A-Rod closing gap in Yankee Run Factor

New York Yankees' Alex Rodriguez reacts after sliding past Colorado Rockies catcher Matt Pagnozzi to score during the third inning. (June 25, 2011) Credit: AP

Alex Rodriguez boosted his batting average to .300 last week, thanks in part to .382 clip over his last 10 games. His seven RBIs also helped him gain 60 points on Curtis Granderson for the lead in Yankee Run Factor.

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

PLAYER G PA R RBI HR YRF/G YRF/PA
Curtis Granderson 76 335 68 55 21 1.342 .304
Alex Rodriguez  71 305 48 51 13 1.211 .282
Mark Teixeira 75 332 47 58 23 1.093 .247
Robinson Cano 75 317 46 48 14 1.067 .252
Derek Jeter 62 293 39 20 2 0.919 .195
Nick Swisher 72 303 35 38 9 0.889 .211
Russell Martin 58 229 24 30 9 0.776 .197
Francisco Cervelli 21 68 6 11 1 0.762 .235
Jorge Posada 61 220 17 35 8 0.721 .200
Brett Gardner 75 258 39 18 4 0.707 .205
Eric Chavez 17 39 5 6 0 0.647 .282
Andruw Jones 31 83 8 12 4 0.516 .193
Eduardo Nunez 44 107 11 12 2 0.477 .196
Chris Dickerson 25 20 4 3 0 0.280 .350
Ramiro Pena 8 16 2 1 1 0.250 .125
Gustavo Molina 3 6 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.