‘If Davis earns a spot, will the Bills opt for a speed player over Williams for the last spot? Speed candidates include Robert Foster and Isaiah McKenzie. Foster caught only two passes last season. McKenzie caught 27, and he played 64% of the snaps in the last nine regular-season games. Obviously, whoever earns the No. 4 wideout job isn’t going to play half of 64%, barring a spate of injuries.’