Watson's first appearance in practice ends quickly for Raiders second-round pick
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Second-round draft pick Menelik Watson's first practice of training camp lasted less than 30 minutes Thursday before the Oakland Raiders' offensive lineman left the field after re-injuring a calf muscle in his left leg.
Watson, the 42nd overall pick and projected backup to right tackle Khalif Barnes, had been on the non-football injury list since the beginning of camp after injuring his calf in mid-July.
Defensive tackle Pat Sims, also making his first appearance of camp, didn't last much longer. He sustained an apparent hamstring injury during blocking drills and missed the rest of practice.
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Raiders coach Dennis Allen hasn't ruled either player out for the preseason opener Friday night against Dallas, but Watson said he hopes to return to practice next week.