June 12th, 2008 Posted in Blue Jays | 6 Comments »
Richard Griffin of the Toronto Star wrote an article on June 12th about Shaun Marcum not being the most talented starter on the Jays, but possibly the team’s most important starter if they hope to contend. So far, Marcum has been better than the Jays could have expected. An argument could even be made that he is currently the best pitcher in the American League, ranking first in both ERA (2.43) and WHIP (0.99).
The logical question that follows is this: Can Marcum pitch this well for the rest of the season?
Below I’ll give the case for and against the possibility of Marcum continuing to pitch this well, based upon some the statistical measures that are readily available on sites like hardballtimes.com and baseball-reference.com.
First I’ll start with the case against….
The Case Against:
Below are a few of the statistical measures that suggest that Marcum will not be able to pitch this well for the remainder of the season:
DER (Defensive Efficiency Ratio)
DER measures the percentage of batted balls that are turned into outs by a team’s fielders, not including home runs (this is similar BABIP, but from the pitcher’s perspective).
Currently, the American League average DER is .705. Shaun Marcum’s DER is .776. This means that 7.1% more batted balls are turned into outs while Marcum is pitching as compared to the league average. Furthermore, Marcum’s .776 ranks second highest in the AL, behind only the .797 DER posted by Gavin Floyd of the White Sox. There is no doubt that this has helped keep runners off base, in turn keeping his ERA and WHIP low.
For the remainder of the season, I would expect Marcum’s DER to even out and come back closer to the average. If it does, the result would be a rise in Marcum’s ERA and WHIP.
FIP (Fielding Independent Pitching)
FIP measures all aspects that a pitcher is responsible for, and helps to show how well a pitcher pitched regardless of how well his fielders fielded. The stat shown is an ERA equivalent number.
Shaun Marcum’s FIP is 3.58. This means that had his fielders not played so well behind him, his ERA could be a full 1.15 runs higher (as compared to his actual ERA of 2.43).
The impact of this defensive support can be seen on the FIP leader list. Marcum is still close to the top, ranking 10th in the AL. However, three of his Jays’ teammates rank higher:
Rank Pitcher ERA FIP FIP-ERA
2 Halladay 3.07 2.91 -0.16
5 Burnett 4.98 3.38 -1.60
6 McGowan 3.92 3.41 -0.51
10 Marcum 2.43 3.58 1.15
The FIP-ERA column shows that Halladay, Burnett, and McGowan haven’t been as fortunate with the Jays fielders as Marcum. All three of the above could have a lower overall ERA than Marcum if the Jays defence had provided them with better support. This is especially true for A.J. Burnett, whose ERA is a full 1.60 runs higher because of a lack of defensive support.
You would have to believe that, over the course of the season, the level of defensive support will even out, which would result in an ERA/WHIP increase for Marcum and a decrease for Burnett and McGowan.
Innings Pitched
This is a fairly simple measure that needs to be taken into account when projecting Marcum’s stats. So far in 2008, Marcum has thrown 92 innings. Assuming that he stays healthy and makes 32 starts, he projects to throw approximately 210 innings, a 32% increase over any other year. That level of increased workload will almost definitely result in Marcum tiring into August and September, which, in turn, will likely cause batters to hit him a little more often.
The Case For:
Below are a few of the stats that could support the argument that Shaun Marcum will continue to be one of the best pitchers in the AL throughout the remainder of the season:
RZR (Revised Zone Rating)
Revised Zone Rating measures the number of batted balls hit into each player’s zone that are turned into outs.
The Jays’ team RZR of .841 is well above the league average of .825, and ranks second behind only Oakland. Basically, the Jays are doing a good job of getting outs when the ball is hit within a playable range, When broken down by infield and outfield defence, both again finish above the league average as well, a testament to the Jays’ strong overall team defence.
Assuming that the Jays can continue to play a high-calibre of defence (and there’s no reason to assume they can’t) it is possible that Marcum could maintain his low ERA and WHIP numbers. However, as noted above in the FIP section, much of the good defence has been saved for Marcum. The Jays may continue to play well in the field, but that doesn’t necessarily mean that they’ll be doing it during Marcum’s starts.
OOZ (Out of Zone Plays)
OOZ measure the number of defensive plays made by players outside of their respective zones.
The Jays, as a team, have made 187 OOZ plays, second only to the Angels. This means that not only is the defence making the plays on balls hit to them (as seen above in RZR), but they are also making the tougher outs as well. Again, since defence doesn’t go into slumps, it is reasonable to expect that the Jays will continue to play decent defence.
K/9 & BB/9
Marcum has improved his K/9, BB/9, and K/BB ratios versus 2007. The improvement K/9 and BB/9 is a likely result of better overall control as well as better pitch selection. Pure development alone will help to keep him pitching well.
Additionally, versus 2007, Marcum is mixing in more change-ups (up from 20.4% of all pitches to 22.1%) and curves while in turn decreasing the percentage of fastballs and cutters. This likely provides a different look more often to the hitter, helping in Marcum’s success.
Summary
Even if the Jays continue to play great defence for Marcum, he will not finish the season with an ERA under 2.50 and a WHIP under 1.00. I believe that the number of innings pitched as well as other statistics beginning to average out (such as DER and FIP) will result in an increase in his ERA and WHIP. I predicted before the season that Marcum would finish with an ERA of approximately 4.00; however his hot start should allow him to finish better than that. Look for him to end 2008 with an ERA/WHIP of 3.50/1.15. That would still be a very nice year for Marcum, especially in his first season as a full-time starter.