DeMarco Murray has the most rushing yards per attempt + rushing yards by a Cowboys running back with 100+ rush attempts in a season, with 1,849.71 in 2014.

what is the highest rushing+ yards per attempt in a season by a cowboys rb( minimum 100+ attempts)
Interpreted as:
What is the highest rushing+ rushing yards per attempt in a season by a cowboys rb( minimum 100+ rushing attempts)?

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