The Washington Times - October 4, 2011, 11:44AM

As the Arizona Fall League opens up today for the 2011 season, the Nationals roster is getting a somewhat anticipated tweak. The Nationals had been hoping to send both Matt Purke and Anthony Rendon to the Fall League this year after the two highly-touted picks were selected in the first (Rendon) and third (Purke) rounds of the 2011 draft. 

But as early as 10 days ago, the Nationals were unsure if Rendon, who’d been working on strengthening his injured throwing shoulder through a throwing program at instructional league, would be strong enough by the time the season started to attend.

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The concern over Rendon’s shoulder — which was injured early last spring when he was playing for Rice — is minimal. He was shut down throughout the summer as he and the Nationals worked toward hammering out a contract and the Nationals were prepared to hold him back from the AFL unless they felt his strength was 100 percent back. 

If not, a source told the Washington Times in September, Zachary Walters, the shortstop acquired from the Arizona Diamondbacks in the trade that sent Jason Marquis to Arizona this past July, would go in the third baseman’s place.

As the season gets underway, the rosters are complete and Rendon is not among the Nationals prospects in attendance. Walters, however, is on the roster of the Scottsdale Scorpions — along with Bryce Harper (OF), Derek Norris (catcher), Pat Lehman (RHP), Rafael Martin (RHP), Sammy Solis (LHP) and Purke (LHP). 

They’ll join top prospects from the Angels, Giants, Phillies and Red Sox to complete the Scorpions’ roster.