PITTSBURGH -- The Pittsburgh Steelers defense is a frustrated and embarrassed group after back-to-back losses against Miami and New England.One day after defensive end Cameron Heyward said he felt like his defensive teammates quit during Sundays home loss against New England, defensive coordinator Keith Butler disagreed.Regardless, the Steelers hope to solve their problems stopping the run and rushing the passer, all while taking a break to recover from injury during the teams upcoming bye week.We have to play harder, we have to play more physical, Butler said on Tuesday. I think were capable of playing harder and more physical, but I dont think we quit by any means.Its frustrating and were all frustrated at this point in time, Butler said.Heyward missed the first two games of his career with a hamstring injury during the Steelers most recent losses against Miami and New England. He wasnt happy with his defensive teammates after the Steelers kicked a field goal that cut the Patriots lead to 20-16. New England needed just three minutes to answer with a six-play, 75-yard drive, as a 37-yard strike to an open Rob Gronkowski set up LeGarrette Blounts second touchdown.It was like we just quit, Heyward said. I dont mean to say that lightly, but I feel like we had so many opportunities out there. I felt like after that, it was almost like the wind got pushed out of us.Linebacker Lawrence Timmons also feels the defense can do better.Thats not our best performance, said Timmons, a 10-year veteran. Thats definitely not a strong showing by us. Thats not a display of who we are.Miamis Jay Ajayi rushed for 204 yards and two touchdowns against the Steelers two weeks ago. Ajayi was the sixth in history and first since Jacksonvilles Fred Taylor in 2000 to rush for more than 200 yards against the Steelers.Blount followed it up with a 127-yard, two-touchdown effort for the Patriots a week later, as Pittsburgh allowed close to 400 yards rushing in back-to-back weeks.We cant play like that as a defense, Heyward said. We let them run the ball. Too many times theyre falling forward and thats not what were supposed to do.You have to have some pride when youre out there. Guys have to step up, whoevers out there. There cant be a letdown.It doesnt help that the Steelers cant get to the quarterback either. Pittsburgh is tied for last in the league with eight sacks, one season after finishing third in the category. The defense is also tied for 26th with three interceptions after ranking sixth last season.Heyward said the Steelers problems arent for a lack of effort, but rather technique. Butler would like to see an increase in physicality.Some of it is that we have to be a lot more physical than what we are, Butler said. Were trying to correct that.The Steelers hope to take care of their problems during the bye week.Whoever is in there has to step up, Heyward said. We have to have a concerted effort from everybody and it has to show on Sunday. Thats the most disappointing for me because I know what this defense is capable of.Game notes Quarterback Ben Roethlisberger was a limited participant in Tuesdays practice, throwing passes during individual work eight days after surgery on his left knee. Its still unclear when Roethlisberger will return to action. . Tight end Ladarius Green practiced for the first time since signing a four-year, $20 million contract as an unrestricted free agent in the offseason. Green started the season on the physically unable to perform list because of offseason ankle surgery. The team now has 21 days to determine whether to put him on the 53-man roster. Patrick Eaves Gear . Bradwell was scheduled to become a free agent Tuesday. Born and raised in Toronto, Bradwell is entering his sixth CFL season, with all six played for his hometown Argonauts. Ryan Miller Gear . -- Teemu Selanne scored the first goal of his 22nd NHL season, and the Anaheim Ducks extended the best start in franchise history with their fifth straight victory, 3-2 over the Calgary Flames on Wednesday night. http://www.anaheimducksgear.com/isac-lundestrom-gear/ .C. -- Calgarys Kevin Koe did it the hard way again. Teemu Selanne Gear . But Bourque, who has missed three games with a lower-body injury, wont be in the lineup when the Habs travel to Buffalo to take on the Sabres on Wednesday. Lukas Dostal Gear . -- The Bishops Gaiters are showing they belong among the countrys top varsity football teams. CHATTANOOGA, Tenn. -- Alejandro Bennifield threw for 279 yards and four touchdowns and ran for another score to lead Chattanooga to a 34-0 win over Presbyterian College on Saturday.Xavier Borishade grabbed three of those scoring tosses for 168 yards.Bennifield, who was 11-of-15 with no interceptions, had 198 yards passing and three scores in the first half. Derrick Craine rushed for 108 yards in the first half and finished with 118 yards on nine carries.Chattanooga (2-0) had 496 total yards while limiting the Blue Hose (0-2) to 196.dddddddddddd The Mocs allowed just 16 total yards in their 66-0 victory over Shorter last week.Richardre Bagley, who finished with 66 rushing yards, sprinted for 55 yards on Chattanoogas first play from scrimmage in the second half. Bennifield ran it in from the nine on the next play for a 27-0 lead.Darrell Bridges led the Blue Hose, rushing for 89 yards on 18 carries. 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