WR Shepard’s status up in the air again

It is not easy for NFL players to prepare for, then participate in a game four days after playing in one. That is the assignment this week for the Giants and Redskins, and both teams are feeling the strain.

The Giants have six players listed as questionable for Thursday night’s game at FedEx Field, most notably receiver Sterling Shepard, who did not play in Sunday’s overtime victory over the Chiefs because of migraines. Coach Ben McAdoo said Shepard was “not feeling well’’ Tuesday and was undergoing further evaluation. That Shepard was not designated as “out’’ or “doubtful’’ is an indication he is making progress and the Giants believe he has a reasonable chance to play. Shepard made the trip with the team, another hopeful sign.

Also listed as questionable: LB Jonathan Casillas (neck), DT Damon Harrison (ankle, elbow), DE Olivier Vernon (shoulder), long snapper Zak DeOssie (trap) and LB Kelvin Sheppard (groin). Calvin Munson, the starting middle linebacker against the Chiefs, is doubtful with a quad injury. G D.J. Fluker (toe), RT Justin Pugh (back) and LB B.J. Goodson (ankle) are out.

Jon Halapio, a first-year player, is expected to start at right guard in place of Fluker. It will be the first NFL start for Halapio, a 2014 sixth-round pick of the Patriots.

“We got a game, we got to go play,’’ Eli Manning said. “I understand it is tough on the players especially late in the year. Linemen, defensive linemen, linebackers, guys who are hitting. For me, the recovery process is not as tough as the other guys, but it is tough on the players.’’

Landon Collins was named the NFC Defensive Player of the Week for his performance against the Chiefs. Collins had a careerhigh 14 tackles (10 solo) and intercepted a pass, not from quarterback Alex Smith, but from tight end Travis Kelce, as the Chiefs tried some gimmickry and Collins was not fooled.