WPA Fun With MVPs

The end of each season brings with it a few certainties: eight teams make the playoffs, one team wins the world series, and we are likely to argue or debate about which player’s performance merits the Most Valuable Player award. Some years house less debates than others but the award’s definition is so ambiguous that there are usually a few players that meet the loose “criteria.” By definition, the MVP award was spawned from the idea back in 1922 to honor the player “who is of greatest all-round service to his club and credit to the sport during each season; to recognize and reward uncommon skill and ability when exercised by a player for the best interests of his team, and to perpetuate his memory.”

Now, in 21st century language, this translates to the player who was most valuable to his team; the player who, if removed from his team, would hinder the success of the team the most; the player the team cannot live without. From a statistical standpoint this would seem to refer to which player contributed the most wins to his team. Luckily, we have a statistic for that here, known none other as WPA.

I decided to look at the win probability statistics for all years currently on Fangraphs (1974-2007) in order to see if the definition of MVP has held true, as well as see the average total and rank for a few of these statistics. The stats in question are WPA, WPA/LI, and Clutch. WPA/LI refers to context-neutral wins and so the different game states comprising plate appearances are not taken into account. Clutch, which I will discuss a bit more in-depth later tonight, measures a player’s performance in high leverage situations against his performance in all others.

Using just the National League for now, I recorded the WPA, WPA/LI, and Clutch, as well as the league ranks, for all MVPs from 1974-2007. The only exceptions were Chipper Jones in 1999, since we don’t currently have that year recorded, and Willie Stargell’s co-award in 1979; according to the league leaders page he didn’t even qualify that year. After calculating the average scores and ranks, here are the results:

WPA: 6.10, Rank: 3.88
WPA/LI: 6.11, Rank: 3.48
Clutch: -0.15, Rank: 19.69

A few things initially stand out. First, the average WPA and WPA/LI are virtually identical. Second, the average rank for MVPs in these categories is between 3rd and 4th. Lastly, the average clutch score is negative.

Of the 33 NL MVPs recorded, 14 finished #1 in WPA; 15 were #1 in WPA/LI; and nobody finished #1 in clutch. In fact, just 3 of the 33 finished in the top ten, the highest being Steve Garvey’s second place rank in 1974 (the other two were Kirk Gibson as #8 in 1988 and Bonds as #6 in 2004). So, despite the hoopla surrounding clutch ability prevalent in today’s mainstream media, it has not necessarily translated into MVP success.

Now, of the 17 players who won the award while posting negative clutch scores, 13 finished 1st-4th in WPA while finishing 1st or 2nd in WPA/LI. The only negative clutch scores that did not were the following players, with their WPA and WPA/LI ranks in parenthesis:

1987: Andre Dawson (19,11)
1991: Terry Pendleton (9,7)
2000: Jeff Kent (7,7)
2005: Albert Pujols (5,2)

Of those with positive clutch scores, 7 of 16 finished 5th or lower in WPA, 6 of 16 finished 5th or lower in WPA/LI, and just 3/16 were in the top ten in clutch.

The highest WPA in this span belongs to (guess who?) Barry Bonds, with a 12.63 in 2004. In fact, from 2001-2004, Bonds averaged 10.79 wins contributed. All four of those seasons ranked in the top four, with Ryan Howard’s 8.10 in 2006 being the only other above eight wins. The lowest two WPA scores came with Dawson’s 1987 season (2.84) and Jimmy Rollins last year with a 2.69. The highest WPA/LI totals were Barry Bonds 2001-2004 and fifth place happened to be Bonds in 1993. Again, the lowest belonged to Jimmy Rollins.

It appears that clutch has not factored into NL MVP voting since at least 1974 and that those with great all around numbers/win contributions have been more than capable of winning the award while seeing a decline in their performance during high leverage situations. I tried to see if anyone this year matched up with the average ranks but the results were not too strong. Lance Berkman is currently 1st in WPA, 1st in WPA/LI, and 15th in clutch, which was the closest. When we get closer to the end of the season it should be interesting to see which players come closest to these averages, if not exceeding them.