Before hitting the practice fields at St. John Fisher University on Sunday morning, Buffalo Bills head coach Sean McDermott spent several minutes running through a lengthy list of injured players. It’s a list that includes two who are listed as week-to-week: cornerback Maxwell Hairston, who’s now joined by wide receiver Khalil Shakir.

The Buffalo Bills aren’t commenting on the reason behind James Cook not participating in practice in what could be viewed as the running back’s next step in escalating his bid to extend the final year of his contract.