Soviets beat United States, 8-4, yesterday in the World Hockey Championships at Helsinki and shoved deeper into history the glorious day when the Americans prevailed en route to '80 Olympic gold. U.S.S.R. is 5-0 in the eight-team round robin, U.S.A. 0-5.

It got rough, not long after Mark Johnson, a 1980 Olympian now one of several NHL players on Team U.S.A., assisted on a goal pulling his side within one. A fistfight, rare in the international competition, brought ejections in late second period for Kurt Kleinendorst, a forward from Providence College, and a Soviet defenseman . . .

Violent world. Wayne Gretzky, NHL great in Finland with Team Canada (tied, 3-3, by surprising Italy; Gretzky pointless), was reminded of his own vulnerability by the news from Edmonton about his boss, Peter Pocklington. Oiler star Gretzky, who has a 21-year, estimated $21 million contract with Pocklington, and sometimes reportedly a bodyguard, said "always" in back of his mind are fears of kidnapers, etc. In Finland, he has no goals, three assists in five games.

Pocklington, 40--in good shape at U. of Alberta Hospital considering minor wounds in chest and arm from the bullet with which police brought down a masked man identified as Mirko Petrovic, 29--said the 11-hour ordeal at his Tudor mansion evidently began as an attempt to kidnap his wife. She fled, though, and the intruder took hostage the sports entrepreneur. Pocklington said the man demanded $2 million; reduced it to $1 million in dickering with officers. Ransom was rounded up from several banks, and as he led Pocklington downstairs, ostensibly to collect, the gunman's right forearm was shattered by a police sharpshooter.

Pocklington said, "Over the day, I found he was just a fellow who wanted a lot of money . . . just a business deal . . . I felt a lot of empathy for him" . .

Linebacker Tom Cousineau, No. 1 pick in 1979 NFL draft quitting Canada after three years with Montreal, has signed an offer sheet with the Houston Oilers. Reportedly three years at $350,000 annually, plus incentives making a $1.5 million package. Buffalo, which Cousineau spurned for Alouette lucre, is--says the Houston Chronicle--"stunned by the (Oilers') offer. They've (Bills) been saying all along they'd match any offer, but right now they're not saying what they'll do." They have until Monday . . .

Before playoff openers, Nevada odds (Caesars) ranked Nets 40-1 to win NBA title, Bullets 100-1. And Suns 100-1, Nuggets 150-1. Celtics 6-5 favorite; Lakers 8-5, Bucks 3-1, Sixers 8-1, Spurs and Sonics 12-1, Hawks and Rockets 15-1 . . . Louisville won't play Kentucky (or anybody) in the Nov. 20 Tip-Off Classic at Springfield, Mass.; Cardinals going to Great Alaska Shootout. Better chance yet for Georgetown to be a Tip-Off team . . . Seton Hall's Dan Callandrillo edged GU's Eric Floyd, 77-72, in media vote for Widmer Eastern college basketball player of year (21-17 in first-place votes, of 42 cast). Hoya Pat Ewing rookie of year, landslide . . . NBA talent experts at Aloha Classic staged mock first-round draft of seniors, plus the two underclassmen so far declared as coming out (Dominique Wilkins, Cliff Levingston). Floyd was No. 7 pick; Wilkins No. 1; Bill Garnett, Wyoming star stopped cold by the Hoyas, No. 3; Callandrillo nowhere in round of 23 . . . Norm Sloan, so successful as N.C. State coach, still has little but trouble at Florida. Both starting guards, Mike Moses and Rob Harden, say they'll transfer. Oh well, Gators went 5-22 with 'em . . . Coach Dick Crum, who has North Carolina football winging, has a 10-year extension, through 1992 . . . George Washington U. inducts Dick Drummond (1961-63 football) and Vinnie De Angelis (1935-37 baseball) into its hall at Colonials Inc. dinner Tuesday . . . It's dinner ($25 single, $45 couple), not lunch, April 29 at Touchdown Club when Ring's Bert Sugar is roasted on eve of Starplex pro boxing. Jersey Joe Walcott on guest list . . .

Golden Boy Paul Hornung ("practice, practice, practice"): out of a New York hospital after one day's treatment for sudden dizziness, nausea. "Maybe," a spokesman says, "he got some bad food or something."

Winners of $1,000 college scholarships from Bullets/NBA: high school seniors Katherine Lemon, Meade, and Jeffrey Bennett, Churchill . . .

A. Umpire Pam Postema, from Willard, Ohio, is in her second year in AA Texas League, looking for call-up to AAA in '82 . . . Q. What is the Filch an Ear Award and who wins it for '82?