The Cowboys will be without RG Zack Martin for Thursday night's season opener at Tampa Bay. HC Mike McCarthy announced Sunday that Martin has tested positive for COVID. We'll see whether that also jeopardizes his availability for Week 2. Losing Martin figures to impact RB Ezekiel Elliott the most, from a fantasy standpoint. It's a particularly tough blow against a Bucs defense that has consistently ranked at or near the top of the league in run defense in recent seasons. Don't be surprised if we get a slow statistical start for Elliott. At the same time, we're not going to recommend immediately benching a RB you likely drafted in Round 1 -- unless you're loaded at the position. Check our full Week 1 rankings to see exactly where Elliott lands.