- Posts: 478
- Joined: Sat Aug 25, 2012 12:15 pm
Rburgh,
One of the biggest mistakes people make when valuing cards and particularly pitchers is that they compute NERP or some estimate of runs allowed over the 108 chances on a pitchers card and think that they have comparable numbers between pitchers. However, baseball is not limited by plate appearances but by outs. So to evaluate pitchers comparably you need to normalize them to a constant number of outs. Also if you only use the pitchers card in your evaluation, you will significantly understate the impact of allowing baserunners (i.e. high WHIP). Lastly pitchers with high WHIPS will not last as long into games and thus pitch fewer innings on the season.
Of that group you listed, Bob Friend will produce the best WHIP, but have the worst TB's. Once you normalize the other pitchers to produce the same number of outs, the extra PA's produce more runs. In a quick TB/OB comparison with Bob Buhl, Buhl will allow approximately 70 more baserunner than Friend, while Friend produces approximately 70 more Total Bases.
Friend's (-4) hold is also beneficial (prob $150k in salary at this run level) and because he has a better whip than Buhl I expect him to throw another 30 IP in a season (prob $200k in salary at this run level).
So as far as Friend fitting in at a price point with others in his range I stand by the original comment. Now if/when I incorporate changes into my RC values (one of which is to increase the RC value of a hit) Friends price will drop (by the way if you used NERP to do your evaluations, it significantly overprices the value of a base hit compared to BB's and TB's, so your results will not like Friend as much just based on the linear weights you are using.)
Also in looking at the comparisons above, I probably "discount" the IP's a bit much for bad WHIP, since neither of these pitchers will produce good WHIPS.
Mark
One of the biggest mistakes people make when valuing cards and particularly pitchers is that they compute NERP or some estimate of runs allowed over the 108 chances on a pitchers card and think that they have comparable numbers between pitchers. However, baseball is not limited by plate appearances but by outs. So to evaluate pitchers comparably you need to normalize them to a constant number of outs. Also if you only use the pitchers card in your evaluation, you will significantly understate the impact of allowing baserunners (i.e. high WHIP). Lastly pitchers with high WHIPS will not last as long into games and thus pitch fewer innings on the season.
Of that group you listed, Bob Friend will produce the best WHIP, but have the worst TB's. Once you normalize the other pitchers to produce the same number of outs, the extra PA's produce more runs. In a quick TB/OB comparison with Bob Buhl, Buhl will allow approximately 70 more baserunner than Friend, while Friend produces approximately 70 more Total Bases.
Friend's (-4) hold is also beneficial (prob $150k in salary at this run level) and because he has a better whip than Buhl I expect him to throw another 30 IP in a season (prob $200k in salary at this run level).
So as far as Friend fitting in at a price point with others in his range I stand by the original comment. Now if/when I incorporate changes into my RC values (one of which is to increase the RC value of a hit) Friends price will drop (by the way if you used NERP to do your evaluations, it significantly overprices the value of a base hit compared to BB's and TB's, so your results will not like Friend as much just based on the linear weights you are using.)
Also in looking at the comparisons above, I probably "discount" the IP's a bit much for bad WHIP, since neither of these pitchers will produce good WHIPS.
Mark