Mike Singletary, 49ers coach, gave another of his motivational speeches at halftime. San Francisco woke up quickly.

In every phase of game.

Singletary said, I just needed to remind them just what really was at stake.

That would be to lead the NFC West.

Vernon Davis, 49ers tight end, caught a pass of 13 yards and scored the third touchdown for him in two weeks, while Patrick Willis had an interception return of 23 yards to score another touchdown. San Francisco was able to overcome the absence of Frank Gore, their star running back, with their 35-0 rout on Sunday over the winless Rams.

San Francisco (3-1) was able to score in multiple ways to take control over the NFC West, following their defeat of Arizona, reigning division champion, as well as Seattle. It was their first recorded shutout in their last 119 games. Their last one came January 6, 2002 in their 38-0 defeat of New Orleans.

Willis said, anytime you can get a goose egg that is great. Today we made a big step. People will say it was only the Rams. That really doesn’t matter.

St. Louis (0-4) lost for the 14th time in a row. It is the longest losing streak in the NFL. It was the second time the Rams have been shut out this season. They lost to Seattle 28-0 in their season opener.

The 49ers scored touchdowns via offense, defense and special teams. It was the very first time that had accomplished that since November 10. 1997 when they defeated Philadelphia 24-12. It was also the biggest margin of victory for the 49ers since December 7, 2003 when they defeated Arizona 50-14.

Singletary, quoting from his message at halftime said, this here is our house. We want to be able to set the tempo, and don’t want other teams coming here and set the tempo against us. I thought they were taking it to us.

Early fourth quarter Shaun Hill connected on a touchdown pass of 24 yards with Josh Morgan. Just 14 seconds later, Kyle Boller, Rams quarterback, fumbled the ball and Ray McDonald recovered and ran back 11 yards to score another touchdown.

Late first half the 49ers found a wacky and lucky way to finally score. Scott McKillop, fifth round rookie draft pick, recovered a punt return that was botched by the Rams inside the end zone. The 49ers lackluster offensive first half got turned around in the second.

Hill said, it was huge how all of the units pitched in. We are leading or division. At the one quarter mark that’s exactly where we want to be.

McKillop was able to capitalize when Danny Amendola of the Rams let the punt of Andy Lee’s go. Quincy Butler, a teammate of Amendola’s tried to pick the ball up but couldn’t get control of it. As the 49ers swarmed the ball, McKillop was able to recover it in the pile up.

Steve Spagnuolo, Rams coach said, you need to communicate will the guys who are blocking for you and tell them the ball is on the ground. I am not sure if it was due to the noise. Danny just didn’t get out. The ball hit Quincy and he knew then he needed to get the ball. He tried doing that.

It was a rough return back to the Bay Area for Boller in his first game as the starting quarterback for the Rams. The former Cal college star was 13 out of 24 for a total of 108 yards passing. He got sacked five time while playing for Marc Bulger, Rams regular starting quarterback, who was out with a bruised rotator cuff.

49ers linebacker Willis wreaked havoc. He frequently went untouched on blitzes and went at the offense of the Rams from all angles. He had eight tackles, with five of them being solo tackles and three tackles went for a loss. He also had 1 ½ sacks along with three additional hits against Boller.

It was obvious that Boller was frustrated.

Boller said, it’s really hard for me to explain. It was just one of those things that we can’t let happen. We can’t have big plays followed by something that takes us back. It kills our drives, it kills all of our momentum and rhythm.

The 49ers clearly missed Gore, who is out with an injured ankle that he hurt during Week three in the 49ers loss to the Vikings. They struggled to move the ball within their power run offense. Glen Coffee, the rookie, took a bigger role on. He rushed for 74 yards in 24 carries for the game.

Hill now has a 7-0 career record as a starting quarterback at Candlestick Park. He went 14 for 24 for a a total of 152 yards passing and was sacked four times.

Some are concerned that Hill is getting hit too much.

When asked how he felt Hill replied, like I just played a football game in the NFL.

Josh Brown, Rams kicker, missed a field goal of 51 yards during the first quarter. After that the Rams didn’t have many other chances. On third down St. Louis went 5 for 16 and managed only 177 yards.