Arnaz Battle, San Francisco’s leading wide receiver in 2007, is skipping this week’s workouts and staying at home in Dallas.

Battle had participated in previous Niner OTAs and was expected to be at this one as well. “I’m not sure what his issue is,” coach Mike Nolan told the San Jose Mercury News and Battle’s agent declined to comment.

A logical guess would be the altered role Battle figures to play in the offense this season. His contract runs through 2009 and, awful quarterbacking or no, hasn’t outperformed it in a meaningful way. Bryant Johnson and Isaac Bruce were signed over the offseason. Johnson is expected to start at one receiver and Battle was battling Bruce for the other spot during previous practices.

It’s a logical guess from our standpoint but not so much for Battle. It’s hard to beat out the competition from Dallas, especially when the competition is familiar with the Mike Martz playbook. Adding to the shortsightedness is the fact that the Niners figure to feature a lot of three receiver sets with Battle still seeing plenty of throws in his direction.