Red Sox doctors have fitted customized shoes on Carl Yastrzemski, with a quarter-inch heel lift, in hopes of preventing recurrence of the Achilles tendon soreness that hobbled him much of 1979. That was during Yaz's drive for the 3,000th hit -- and now that he has accomplished it at 40, FF reader John D. Berryman, M.D., a Yaz rooter, writes, "I came across a column of yours headed 'Reader Likes Yastrzemski's Chances for 3,000 Hits' . . . dated Dec. 27, 1975, I believe I cut out the column because of your skepticism regarding Yastrzemski's chances . . . it seems that your basic position was that of extreme pessimism (true, doctor). I wonder if you could mention briefly a salute to the reader who originally drew my attention to this, Mr. Bob Stearns from Bethesda, to congratulate him on his logic, and perspicacity." Sorry, doctor, we agree, but where would we squeeze it in? a

Baseball: American League President Lee MacPhail says a scheduled Jan. 3 AL meeting at which owners hoped to vote on sale of Charlie Finley's A's to oilman Marvin Davis and shift from Oakland to Denver has been called off -- but negotiations continue in hope of the move before 1980 season . . .