Steven Jackson lowered his head and sighed when asked Thursday how his sore groin was feeling. “The groin is fine,” he said. “My groin doesn’t bother me any more than my feelings in my heart.”

Jackson has been slightly limited in practice this week, but he’s sensitive to the Rams fans’ feelings toward him after his 27-day training camp holdout. He sought to assure that he’ll be on the field Sunday vs. the Bills, pounding away.

And that the Rams dreadful showing so far this season, which led to quarterback Marc Bulger’s demotion this week, is bothering him greatly.

His health “won’t be a problem Sunday,” Jackson said, adding that he didn’t want fans to think that “I’m going to be less than 100 percent. I’m going to go out there and play hard. There’s not going to be an excuse, if we win or we lose. . . . However I perform, it’s not going to be because of my groin.”

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Notes & quotes:

*Even after his worst games, Bulger consistently has stood up to reporters’ questions. But he’s declined to be interviewed in the wake of coach Scott Linehan’s decision to go with Trent Green vs. the Bills.

*Adjusting to a new quarterback isn’t too tall a challenge, T Orlando Pace explained: “The only adjustment you have to make is the snap count. Every quarterback has a different snap count, how they call their ‘huts,’ their cadence.”

*Pace, on Bulger’s benching: “Hopefully I do my job so I don’t get replaced.”

*Linehan, on Green’s performance in practice this week: “It doesn’t take long to get back on the horse. Trent’s got great command of the offense. He’s just being himself and just getting himself ready to do his job.”

*Rookie WR Keenan Burton, on initially being reluctant to undergo knee surgery after being hurt in the opener: “I wanted to get the respect of my teammates first and foremost, and show the coaches that regardless of what happens, I’ll definitely be there for them and I’ll do what they ask me to do.”

All for now . . .