Wang was 90.6% comparable to Morton and Stauffer was 82.0% comparable.
Charlie Morton, over his last three seasons, from ages 27 through 29, walked 3.3 batters per 9 innings, struck-out 5.9 per 9IP, and allowed 0.5 home runs per nine innings. He had an extraordinary groundball rate of 59.6%.
Stauffer, at ages 27 through 29, had 2.9 BB/9, 6.4K/9, 0.8 HR/9, and a groundball rate of 50.8%.
Wang had 3.0 BB/9, 5.0 K/9, 0.5 HR/9, and a groundball rate of 56.8% at ages 27 through 29.
Stauffer only pitched 5 innings in his age-30 season. He was converted into a reliever at 31 and pitched 69 innings with a 3.75 ERA and 3.20 xFIP.
Wang did not pitch at age 30. He had a 4.17 xFIP in his age-31 season.
Here is my projection for Charlie Morton in 2014, his age-30 season:
If I could honestly predict that Morton would not hit any batters in 2014, I would bring his xFIP/ERA projection down to 3.56. But 31 hitters failed to get out of the way of one of Charlie’s pitches in the last three seasons.And I don’t suspect that National League hitters will become better duckers this year.
I joke, but Morton’s “plunkiness” is likely to add about 5 runs to his total in 2014, costing him an estimated 0.5 WAR.
Morton’s average walk rate, low strikeout rate, and league-leading groundball percentage may be an unusual combination, but, for him, it has been effective. His projected 3.86 xFIP would make him a solid #3 starter, according to the conclusions of this post.