Wow-that surprises me. His strikeout numbers are high, but his 2.11 WHIP and 1.90 HR/9 percentage have me definitely wondering how an ERA under 5.50 could be reasonably expected last year. the walks were the problem. its something hes never done before. all through the minors he had shown good walk rates so eventually its more than likely going to go down. the main thing last year was a spiffy .381 BABIP. umm that just screams fluke. LD% was ridiculously high, though. He needs to control his pitches better within the strike zone too. um LD% is another VERY inconsistent statistics with little to no year to year correlation yeah i guess it's just a coincidence that good pitchers usually have low LD% and bad pitchers usually have high LD%. Guzman threw way to many pitchers in the middle of the plate last year. I don't think I was imagining that. First, are they good pitchers because there LD% is low or is their LD% low because theyre good pitchers? Obviously having a low LD% means youre not giving up a lot of hits, but it doesnt mean its a repeatable skill. Now, lets look at the top 15% last season in LD percentage with ERA 1. Derek Lowe 2. Randy Johnson 3. Jose Contreras 4. Barry Zito 5. Clay Hensley 6. Matt Cain 7. Chien Ming Wang 8. Jason Marquis 9. Carlos Zambrano 10. Jake Westbrook 11. Brandon Webb 12. Josh Beckett Now let's look at the bottom 15% 1. Paul Byrd 2. Joel Piniero 3. Tom Glavine 4. Justin Verlander 5. Jeff Suppan 6. Carlos Silva 7. Rodrigo Lopez 8. Aaron Harang 9. Andy Pettitte 10. Jon Lieber 11. Vicente Padilla 12. Bronson Arroyo The ones with the lower LD% performed about .5 better in ERA, but Verlander, Harang, Arroyo, Glavine and Pettitte aren't chopped beef. Last year there were 76 guys who pitched 162 innings. So let's break them into groups of 11. here is the collective ERA+ of those guys. 1. 113.82 2. 105.09 3. 110.09 4. 112.64 5. 108.82 6. 110.36 7. 98.82 Here's the r^2 correlation for the RA and LD% (the highest in the spreadsheet i had) a whopping 0.061. That's SO HUGE! Ironically enough if you do the data again in 2005, the bottom group actually has a lower RA than the top group. Okay from 2004-06 there were 110 sets of back to back seasons by pitchers with more than 162 innings pitched. Of those 76 guys in the last set, only 54 of them reached that amount in the previous year. Lets divide them by 14, 13, 13, 14. In 2005, the first set of 14, the guys with lowest LD% in 2006 had a ERA+ of 114.9. In 2005 the guys with the highest LD% in 2006 had an ERA+ of 113.4. That's pretty much no difference whatsoever. Especially when the 2006 difference was 111.2 to 98.9 Now using the 110 seasons I had before, the year to year correlation of LD% is an r of .1852 and an r^2 of an amazing .0343. Yay there's almost nothing from it! So useful(ess). Now, one thing I did notice when I split up those groups is that every group but the top level had essentially the same GB%. The top was about five percent higher because Derrek Lowe and Chien Ming Wang. So if you are UBER elite (we're talking 60%+ GB% which is three or four pitchers in all of baseball) you can keep your LDs down BUT the effect is probably canceled out because GBs are hits more often than flyballs. Regardless like I said LD% is pretty much worthless for pitchers from year to year.