“He’s definitely chomping at the bit to get going,” coach Dan Quinn said. Another bit of good news for the injury-hit Commanders arrived on Wednesday: Starting right guard Sam Cosmi began his 21-day practice window after starting the season on the physically unable to perform list. Cosmi tore the ACL in his knee during the playoffs last season, when Daniels led the club to the NFC title game. “As a competitor, you want to go out there and help your teammates any way possible,” Daniels said. McLaurin, who missed training camp while negotiating a new contract, injured his quadriceps muscle on a catch against Las Vegas and missed every practice last week.