In the week since Stephen Strasburg was scratched from his start last Tuesday, the concerns about the rookie's mechanics, which had lain mostly dormant since the Nationals took him with the No. 1 overall pick last June, erupted again.
White Sox pitching coach Don Cooper, among others, said Strasburg's delivery put unnecessary stress on his shoulder and would lead to more serious injuries than the inflammation that currently has him on the 15-day disabled list.
Baseball Daily Digest is also discussing Strasburg's mechanics, in the middle of a three-part series on the pitcher. And breaking down his delivery today, the web site didn't see any major red flags with his arm action.
The main objection to Strasburg's delivery is that he displays what's called the "inverted W, where his elbows are above his shoulders as he strides to the plate. In some analysts' views, that kind of arm action places too much stress on a pitcher's shoulder and will eventually cause it to break down. The site discusses that, but also mentioned pitchers that have formed an inverted W their entire careers and made it work.
Take a look. Strasburg, by the way, will throw a bullpen session this afternoon, and is scheduled to pitch a simulated game on Thursday.