49ers Are 4-1, but Not Everything Is Shipshape

San Francisco Chronicle columnist C.W. Nevius flipped through the 49er media guide and looked into the abyss . . . well, at least the one at the very top of the team’s food chain.

He noted that the first three entries are Eddie DeBartolo, Carmen Policy and Dwight Clark. Policy is gone, Clark may be following him to Cleveland and DeBartolo, of course, has been dealing with the feds.

But what about the future?

A 49er follower always has to be concerned about something, even if the team is 4-1 and cruising through the NFC West.

“They are dominant,” Nevius concluded. “They are overpowering. They are unsinkable. But someone on the bridge had better keep an eye out for icebergs. Assuming, that is, that someone is up there.”

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Trivia time: Who was the only pitcher to give up a home run to Tommie Aaron but not to his brother Hank?

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Split end shift: When Green Bay played the Vikings last week, a General Motors assembly plant in Janesville, Wis., shut down because about 140 employees failed to come to work, according to plant manager Gary Giles.

The solution?

About 100 televisions were made available in break areas so employees could watch the game when they were off the assembly line during Thursday night’s game against the Lions.

Wonder if everyone in the plant suddenly discovered a desperate need for coffee?

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Soft shoe: The Washington Post’s Tony Kornheiser, on Mike Tyson’s psychiatric testing:

“What great boxer wouldn’t need counseling for his anger? To put it another way, when was the last time you saw Mr. Rogers in a ring? There’s a name for boxers who aren’t angry: shoe salesmen.”

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Cereal king: From the you-knew-it- would-happen category . . . Mark McGwire is on the Wheaties box now.

On Tuesday, General Mills unveiled a special box commemorating the season in which McGwire shattered Roger Maris’ single-season record with 70 home runs.

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Can’t-miss kid: The first hole in one was pretty cool for 15-year-old Bradley Farmer. Now, he maybe cracks a smile when he makes one.

After all, why get really excited about doing it six times in a span of 41 days?

“It’s been pretty incredible,” said Farmer, a sophomore at Goodpasture Christian School in Madison, Tenn. “Most people play their entire life without making one.”

Farmer, who has eight holes in one, made his first one when he was 12 and second a year later. This was before the recent rush.

“It’s not like I was trying to make them, but the hole started looking bigger,” he said.

According to hole-in-one records kept by Golf Digest, the record for most aces in one year is 11, last done by Dr. Joseph Boydstone in 1962.

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Trivia answer: Jack Hamilton, when he was with the Philadelphia Phillies and New York Mets.

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And finally: Yankee pitcher David Wells, trying to console Wayne Gretzky and the struggling Rangers: “We started out losing our first three games too, and everybody wrote us off.”