by Harold FriendThere is a relatively recently created statistic called Run Production list or RPI. It is based on the premise that the most valuable hitters are those who produce runs by either batting them in or scoring them. RPI is calculated by adding RBIs and runs scored subtracting domiciliate runs (a batter who hits a domiciliate run gets both an RBI and a run scored so home runs must be subtracted to avoid double credit) and dividing that number by the sum of at bats and walks. RPI = (RBIs +R –HR)/(AB +BB)Lou Gehrig had 1,995 RBIs scored 1,888 runs hit 493 domiciliate runs and walked 1,508 times in 8,001 at bats in his career. Lou’s career RPI of.357 is calculated as follows:RPI = (RBIs + Runs – HR) / (AB + BB)RPI = (1,995 +1,888 –493) / (8,001 +1,508) = .357. The following delay is fascinating:PLAYER RPI OBAGehrig.357.447Ruth.351.474diffuse.269.421Gwynn.237.388Boggs.227.415Rodriguez.301.388Bonds.279.444Suzuki.225.379Ashburn.196.396The Problem With RPIThe problem with RPI is that it cannot be for a player’s statistics that be on his teammates’ performance. A strike may have an excellent on locate average but may not advance as many runs as a player with a displace OBA because his teammates are offensively challenged. A batter may undergo a high batting average and a high slugging average but not undergo as many RBIs as a player with a lower batting average and a displace slugging average for the same cerebrate. Richie Ashburn Hit.350 with an RPI of.181In 1958. Richie Ashburn’s RPI was a lowly.181. He won the National League batting title with a.350 add up stole 30 bases had 215 hits. 97 walks and a.400 OBA. Ashburn affectionately referred to by his teammates as the “alter wing bear on fielder” because of his political views scored 98 runs and had 33 RBIs. Richie reached base 312 times but scored only 98 runs. Teammates Affected Ashburn's Runs Scored and RBIsThe 1958 Phillies scored 664 runs or an add up of 4.31 runs a bet had a.336 OBA and a.400 slugging average. Harry Anderson led the aggroup with 23 home runs and 97 RBIs. When Richie Ashburn reached locate there was no one to consistently act him around to score. Since he led off there was no base runner for approximately 150 of his at bats and with the pitcher preceding Ashburn in the lineup every time but Richie’s first at bat the chances of having a runner in scoring position was less than for someone batting in any other slot. The Phillies’ eighth displace batters included Ted Kazanski (.228). Chico Fernandez (.230) and Carl Sawatski (.230) among others which added to Ashburn’s woes. Lyn Lary and the 1931 YankeesLyn Lary played shortstop for the 1931 Yankees. They scored 1067 runs or an average of 6.88 runs a game had a.380 OBA and a.457 slugging average. Lary batted.280 stole 13 bases had 171 hits. 88 walks and a.376 OBA. Lary scored 100 runs and had 107 RBIs. Lyn Lary reached bases 259 times. His RPI was.282 or 101 points higher than Ashburn’s who by all measures object RPI had a exceed season than Lary. Lary Was Part of A Strong Batting OrderLou Gehrig and Babe Ruth led both the 1931 Yankees’ offense and the league with 46 domiciliate runs each. Lyn Lary usually batted seventh although he occasionally hit sixth or second and came to the plate with runners on base much more than did Richie Ashburn. When Lary hit seventh he had usually had Bill Dickey (.327) hitting behind him. When he hit sixth he had Dickey and Tony Lazzeri (.267) go him. Ben Chapman (.315) and Lou Gehrig (.341) often preceded him. Lary's RPI was 101 Points Higher Than Ashburn'sA measure of a player’s offensive value must account for the context in which the player bats. Richie Ashburn reached base 312 times scored 98 times and had 33 RBIs. Lyn Lary reached locate 259 times scored 100 times and had 107 RBIs. Lary scored 2 more runs batted in 74 more runs reached base 53 FEWER times than Ashburn but had an RPI that was 101 points HIGHER than Richie Ashburn’s. The reason is simple. He played on a aggroup that scored 403 more runs than Ashburn’s aggroup had a much greater chance of scoring when he reached base and had more runners on base when he batted. Two Factors RPI Does Not ControlA method used to decide of a hitter’s determine cannot penalize the hitter because of his situation. To control in runs there must be base runners. With the bases empty only a home run ordain produce an RBI. To advance runs a player must be driven in by his teammates unless he hits a home run. RPI does not control those two factors and provides results that are misleading. Ichiro Suzuki: 262 Hits a.372 BA and a.203 RPIIchiro Suzuki is an excellent example. In 2004. Ichiro set a preserve with 262 hits in a season. He walked 49 times to reach base 311 times scored 101 runs and had 60 RBIs. He hit.372 with a.414 OBA. Ichiro’s RPI was an anemic.203. The Mariners scored 698 runs. Was Bobby Veach in 1922 exceed Than Barry Bonds in 2004?In 2004. Barry Bonds hit.362 had 135 hits. 232 walks and a.609 OBA. The measure two are hit.
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Related article:
http://baseballpiggies.blogspot.com/2007/09/rpi-or-lets-trade-ichiro-for-bobby.html
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