For Allen, Best Part Is the Ending, 24-9 : Pro football: He scores 100th touchdown in Chiefs’ victory over Raiders. Montana is injured.

Marcus Allen provided the emotional lift for his new teammates, the Kansas City Chiefs, in a 24-9 victory over the Raiders on Sunday, getting the 100th touchdown of his career against his old teammates and ending the afternoon being embraced by both sides.

But he still wasn’t satisfied.

“Had I written the script, I would have written it a little better,” Allen said after gaining only 24 yards in 17 carries.

But as scripts go, this one had all the proper elements. It was classic drama, a football version of “The Fugitive.”

Allen left his beloved teammates last spring after a nasty public feud with owner Al Davis only to get his revenge on a national stage at Arrowhead Stadium.

Raider management has closed the book on the 11-year Allen era. They are much more interested in the next era. After Sunday, it might be known as the Rocket Age.

Rocket Ismail’s long-awaited NFL debut was by far the brightest spot on a dismal day for the Raiders.

Quarterback Vince Evans, starting in place of injured Jeff Hostetler, was never able to get untracked, hampered by an ineffective running game, an overpowering rush by the Chiefs that led to six sacks, including four by Neil Smith.

After languishing on the launching pad during a five-month contract dispute and a month of preparation and injury, Ismail took off Sunday, catching four passes for 75 yards, including a 43-yard touchdown pass from Evans.

“Man, it was crazy,” Ismail said. “I was so excited.”

By the time he got into the game, however, the Raiders were out of it.

Kansas City quarterback Joe Montana gave his team a 14-3 lead before leaving in the second quarter because of a pulled hamstring.

No matter. The Raiders couldn’t recover.

The first Chief touchdown was pure Montana. With Kansas City on the Raider one-yard line in the first quarter, the crowd of 77,395 was poised to cheer Allen’s first touchdown against his old teammates.

And indeed it seemed like classic Allen when he glided by the quarterback, hunched over as if to take the ball, and then went airborne into the end zone.

Only problem for the Raiders was that Allen didn’t have the ball.

Montana kept it and lofted it into the right corner of the end zone where 6-foot-6, 288-pound offensive lineman Joe Valerio, eligible on the play, waited all alone for a touchdown.

“This has never happened to me before,” said Valerio, now in his third year. “Never. Maybe in (youth football). I saw Joe’s eyes get real big and, when that happened, I knew he was going to throw it to me. No way I was going to drop it. This one’s going in the trophy case.”

Montana came back later in the quarter with a 15-yard touchdown pass to Willie Davis.

Jeff Jaeger’s 27-yard, second-quarter field goal put the Raiders on the scoreboard. Then came the moment Allen fans had been waiting for.

After Montana was injured, Dave Krieg finished up a 53-yard drive by handing off to Allen on a third-and-two at the Raider four-yard line.

Allen avoided a rush and went to the right corner of the end zone. Only defensive back Eddie Anderson had a shot, but it wasn’t much of one.

Anderson dived futilely at Allen’s legs, coming up with a handful of air.

It was a sight the Raiders had learned to appreciate over the last 11 years.

But not this time.

Allen ran into the end zone and up the tunnel.

Kansas City 21, Raiders 3.

The 100th touchdown of Allen’s career tied him with former Pittsburgh Steeler Franco Harris for ninth on the all-time list.

“That meant a great deal,” Allen said. “I got to tell you, I wanted it for some time. I don’t know whether it was poetic justice or what.”

The Raiders, to a man, insisted it didn’t matter who had scored against them. All they cared about was that it was someone in a red uniform.

“Once the game starts,” Raider linebacker Winston Moss said, “he (Allen) turns into another running back.”

Raider defensive line Howie Long, who played with Allen for the tailback’s entire Raider career, said his first confrontation with Allen was “not as big a deal as I thought it would be. Fortunately, I got to him in the backfield before he could fake me out. I work hard, he works hard. That’s what I get paid for and that’s what he gets paid for.

“I’m glad it’s behind us. It’s time to move on. For two weeks, that’s all I’ve been getting wherever I went. I’m a little bit tired of it.”

Did Allen say anything to him on the field?

“I think,” Long said with a smile, “there was one ‘Damn, Howie.’ ”

The Raiders did plenty of cursing themselves after drawing 16 penalties for a total of 168 yards. Kansas City had five for 42 yards.

Raider defensive lineman Nolan Harrison, his patience exhausted when a official ruled that he failed to control a fumble before it went out of bounds, shoved umpire Dennis Riggs, drawing the first ejection of Harrison’s career.

It got so bad, Tim Brown was penalized for improperly signaling for a fair catch on a punt.

The only scoring in the second half was a 29-yard field goal by Nick Lowery and the touchdown catch by Ismail.

Before making that catch, Ismail lost cornerback Dale Carter on a give-and-go route down the right sideline.

“I thought I was out of bounds,” Ismail said, “because the safety did not even come over. When I saw I was in the end zone, I said, ‘Rad, this is great.’ ”

When the game finally ended, Allen greeted and hugged one Raider after another as he made his way off the field.

The uniform has changed, but not the feelings.