PRO FOOTBALL : DAILY REPORT : RAIDERS : Hamstring Injury Sidelines Nick Bell

Rookie tailback Nick Bell, who showed flashes of brilliance in Saturday’s loss to Miami in Tokyo, may be lost two to four weeks with a right hamstring pull. “It doesn’t seem that serious,” Raider Coach Art Shell said Monday. “But these things, you never know how long they’re going to take.”

Bell, a second-round choice from Iowa, would not comment about the extent of his injury.

Other injury updates: Offensive lineman Todd Peat has an injured triceps and will be further examined today by team doctors in Los Angeles. . . . Kick returner Ron Brown banged his knee on the artificial turf at the Tokyo Dome but was not limping noticeably when he returned to the team’s training complex in Oxnard. “We don’t expect that to be serious,” Shell said of Brown’s injury.

The mystery of why Marcus Allen did not play in Tokyo is no longer a mystery. Shell said that Allen and starting fullback Steve Smith were held out of the game to give Greg Bell and Vance Mueller more playing time. Bell and Mueller had played sparingly the week before in the Raiders’ exhibition opener against San Francisco.

Correction: Contrary to Monday’s update item, Bob Golic did make the start at nose tackle in Tokyo. In fact, he played most of the first half. Rookie quarterback Todd Marinovich, though, really didn’t play.

“We talked about possibly playing him,” Shell said. “But in the final analysis, we broke it down and held him out. Hopefully he’ll get some playing time (next Monday night in Dallas).”

The Raiders returned to Oxnard late Monday afternoon and will resume two-a-day practices through Friday. Shell on the Tokyo trip: “The Japanese people were very cordial, warm, they welcomed us. But we’re glad to be back home.”