09/11/2010 1:14PM

Arlington: Matthews live again

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Trainer Doug Matthews has been sending a steady stream of live first-time starters this summer. From the betting on race 2, Peters Rock is another one. With 18 minutes to post, Peters Rock was 6-5 off a morning line of 8-1 in a $25K maiden-claiming sprint rained from turf onto Poly. It was a soft spot to begin with, and three scratches aren't making the race any tougher.