Record-setting Washington Redskins place kicker Mark Moseley beat out teammate Joe Theismann as United Press International's NFC player of the year in balloting announced yesterday. San Diego quarterback Dan Fouts won AFC player of the year honors.

Moseley made National Football League history with his 23rd consecutive field goal and was good on 20 of 21 attempts overall during the regular season.

An integral part of the Redskins' offense in their drive to the NFL title, Moseley was selected on 27 ballots. Theismann, the leading passer in the National Conference, received 12 votes; San Francisco's league-leading receiver Dwight Clark got 11.

Fouts, who threw for 2,889 yards and 17 touchdowns, received 30 votes from the 56 writers participating, four from each AFC city. Ken Anderson, Cincinnati's four-time all-pro, got 20 votes, Los Angeles Raiders rookie running back Marcus Allen six . . .

Tom Flores, who guided the Raiders to the best regular-season record in their conference, was voted UPI's AFC coach of the year. Flores, in his fourth season with the Raiders, received 24 votes with Miami's Don Shula getting 16 and Walt Michaels of the New York Jets getting 10. The NFC coach of the year will be announced next week . . .

Penn State quarterback Todd Blackledge will pass up his final year of eligibility with the national champion for a shot at the NFL because, "At this point in my career, I'm both mentally and physically ready to play pro football." Blackledge, redshirted as a freshmen, will graduate this spring and is eligible for the NFL draft in April. Said Coach Joe Paterno, "As we have told him on many occasions, he had absolutely no obligation to stay, but was only obliged to do what would be best for him" . . .