Raiders quarterback  Aidan O'Connell was carted off the field late in the third quarter of Las Vegas' 28-13 loss at Tampa Bay on Sunday with a knee injury.  O'Connell had his left leg placed in an air cast after coming down awkwardly following a seemingly late hit from behind by  Buccaneers defensive tackle Calijah Kancey. "It does not look good," Raiders coach Antonio Pierce said when asked for an update on O'Connell. Pierce did say Kancey's push from behind appeared late, after watching the replay, and requested clarification in real time from the officials, to no avail. "We asked, per usual," Pierce said. "We'll make a report, see what comes back on Monday or Tuesday." Desmond Ridder, signed off the Arizona Cardinals' practice squad on Oct. 22, replaced O'Connell. He finished the game 12-of-18 for 101 yards. The only other quarterback under contract with the Raiders is undrafted rookie Carter Bradley, who is on the practice...