Sources estimate the fine levied against Philadelphia Eagles safety Andre Waters for dirty play against the Minnesota Vikings on Oct. 15 at $10,000. The NFL has not disclosed the amount of the fine, saying only it is "a substantial amount."

Waters twice went for the knees of Rich Gannon. He was fined for hitting the quarterback after a pass attempt. Waters also deliverd a low hit when Gannon was attempting to run out of bounds; he justifies that hit by saying a quarterback is just like a running back once he leaves the pocket.

"It was a raw deal and I'm going to appeal it," Waters said. . . . Dickerson Unfazed

Eric Dickerson was affected by the banners and boos in the Hoosier Dome about as much as he was by his six-week vacation from the Colts. In other words, not much.

"There was no problem. It was no big deal to me. I don't get caught up in that," Dickerson said of the chorus of boos that greeted him as he trotted onto the field on Indianapolis's first possession Sunday against the Broncos.

Hanging from the upper deck overlooking the field a sign read: "Eric expensive but worthless every penny of it." Another proclaimed: "Indy wants Albert," referring to running back Albert Bentley, who took over in Dickerson's absence.

Dickerson's first carry was an 11-yard gain up the middle. The next play he ran right for 20 yards.

By then, the boos had turned to cheers, a fact not lost on Dickerson, who noted the fans' fickleness.

"If you ride the wagon, ride it all the way," he said. "If you boo, boo all the way, whether I run 100 yards or not."

Colts Coach Ron Meyer revealed he received a death threat in the mail yesterday, but wasn't too concerned. "No, I do not fear for my safety," he said.

Then, joking, he said he hopes the sender puts him out of his misery from the 27-17 loss to Denver. Casillas Found

Falcons nose tackle Tony Casillas, who missed most of training camp in a contract dispute and Sunday's game in Los Angeles, showed up at the team's training complex yesterday.

"Casillas met with Coach {Jerry} Glanville this afternoon. The Falcons and Coach Glanville have no statement," team spokesman Frank Kleah said.

Casillas missed the 44-24 loss to the Rams after failing to catch the team flight. Casillas's agent, John Maloney, said he missed the charter to Los Angeles after he became ill on his way to the Atlanta airport.

"From what I understand, Lisa {Casillas's wife} was driving Tony to the airport Saturday. He got sick and they had to pull off the road," Maloney said Sunday. "He still tried to make the flight, but was too late."

"It must be a hell of an illness," Glanville said before yesterday's meeting. "I don't think I should comment on his status. I know how I'm going to handle the situation." . . .

Oilers Pro Bowl guard Bruce Matthews signed a four-year contract extension that will make him one of the best-paid offensive linemen in the NFL.

The Houston Chronicle reported the agreement eventually will make Matthews the team's first $1 million-a-year lineman. He is in the last year of a four-year contract that pays him $425,000 this season. Fluuuutie

Doug Flutie completed 31 of 38 passes for 384 yards and three touchdowns as the British Columbia Lions defeated the Edmonton Eskimos, 30-8, in the Canadian Football League Sunday in Edmonton. British Columbia was eliminated from playoff contention last week. . . .

Saints running back Dalton Hilliard tore a ligament in his right knee late in Sunday's loss to Houston and will miss at least this week's game against Detroit. . . .

The Packers placed offensive tackle Ken Ruettgers on injured reserve. He had arthroscopic surgery on both knees last Monday to repair cartilage damage. . . .

Seattle center Grant Feasel had arthroscopic surgery on his right knee, hurt Sunday against Kansas City. The Seahawks are off this week. They hope to have Feasel back Nov. 4 against San Diego.