FOXBORO -- Starting left guard Logan Mankins was among four Patriots players not in attendance for practice on Wednesday in full pads on the lower practice field outside Gillette Stadium. 

Also missing from the start of practice were tight end Aaron Hernandez (knee), Sebastian Vollmer (back) and Mike Wright (concussion). Albert Haynesworth returned to practice after missing last week and the game against the Bills with a sore back. 

The team travels to Oakland on Friday for Sunday's game against the Raiders. 

FOXBORO -- In a conference call with Patriots media Wednesday in Foxboro, Raiders coach Hue Jackson reminded everyone of his close ties to Patriots receiver Chad Ochocinco. Well before joining the Raiders coaching staff in 2010, Jackson was the receivers coach with the Bengals from 2004-06, when the then-Chad Johnson became a rising star with Cincinnati. 

The Patriots Wednesday morning officially announced the signing of Gerard Warren to the defensive line. He will wear No. 98.  

In an effort to shore up the depth along their defensive line, the Patriots are bringing back veteran defensive lineman Gerard Warren, according to a report in The Boston Globe. 

Warren was a surprising cut at the end of training camp, but there was much speculation that the team would eventually bring him back at some part of the season. With Albert Haynesworth's availability unknown for this week due to a bad back and a long cross-country flight ahead for the team on Friday, the Patriots have apparently decided that the time is now. 

The Patriots released defensive lineman Landon Cohen on Tuesday. Cohen, 6-foot-3 and 300 pounds, went to training camp with the Patriots this past summer but was released on Sept. 3 before being re-signed on Sept. 21. He played in a reserve role last Sunday at Buffalo. Cohen was originally signed by the Patriots on December 22, 2010 and played in two games with one start, finishing with four tackles. He is a veteran of three NFL seasons after spending time with the Detroit Lions (2008-09), Jacksonville Jaguars (2010) and Patriots (2010).

Report Card time and comparing Chad Ochocinco to Carl Crawford is silly, of course -- about $136 million reasons why that doesn't work -- but it strikes me that both have had a tough time adjusting to new teams (and I'll bet you never thought of that -- it's why they pay me, folks).



FOXBORO -- The day after, there was accountability.

Patriots coach Bill Belichick made his weekly appearance on The Big Show Monday, discussing the team's loss to the Bills, their upcoming game against the Raiders, and the NFL Network's two-part documentary on the coach.

Bills quarterback Ryan Fitzpatrick was not sacked in the Bills' 34-31 victory, but Belichick did not express specific displeasure with the team's pass rush. 

Patriots defensive tackle Vince Wilfork made his weekly appearance on The Big Show Monday, discussing the team's loss Sunday in Buffalo and taking a look ahead to next week's meeting with the 2-1 Raiders.

The Patriots led by a score of 21-0 in the second quarter before the Bills mounted a comeback and won, 34-31. The Bills joined the Packers and Lions as the league's only 3-0 teams, while the Pats fell to 2-1.

Patriots quarterback Tom Brady, who passed for 386 yards and four touchdowns but threw four interceptions in Sunday's 34-31 loss to the Bills, joined the Dennis & Callahan show Monday morning for his weekly conversation as part of WEEI's Patriots Monday.