"A positive drug test from last October that was later overturned, because of what a since-fired arbitrator ruled to be an "invalid" collection of his urine sample." invalid in quotes, nice Jayson Stark, who later states: "we have a frustratingly incomplete set of facts to help us understand exactly why he tested positive and why his suspension was overturned." So I guess we should assume everything was "invalid" even though we really have no facts