Raiders rookie LT Menelik Watson is now battling recurring calf problems from an injury suffered in training camp.
Raiders rookie OT Menelik Watson (knee) returned to practice Wednesday.
Raiders LT Menelik Watson (knee) could resume practicing next week.
Raiders LT Menelik Watson (knee scope) is expected to be out for one month.
The Raiders will be down to two healthy offensive tackles if LT Menelik Watson (knee) is unavailable for Sunday's opener.
Raiders LT Menelik Watson (knee) was absent from Thursday's practice.
Raiders LT Menelik Watson suffered a knee injury in Wednesday's practice.
Raiders coach Dennis Allen was pleased with OT Menelik Watson's debut at left tackle in Thursday's preseason finale.
New Raiders LT Menelik Watson has never played left tackle at any level of football.
Second-round pick Menelik Watson has been inserted as the Raiders' starting left tackle.
Raiders OT Menelik Watson (calf) resumed practicing on Wednesday.
Raiders rookie OT Menelik Watson has "no timetable" to return from his calf injury.
Raiders second-round OT Menelik Watson (calf) was activated from the NFI list Wednesday, but suffered a setback in his practice debut.
Coach Dennis Allen admitted that second-round RT Menelik Watson is "way behind."