INJURED: JOHNNY UNITAS, the Baltimore Colts' 37-year-old quarterback, while playing paddle ball. He underwent surgery for a ruptured right Achilles' tendon, and doctors said the operation was a success. Teammate TOM MATTE, his opponent in that puddle game, felt ill, went to the same Baltimore hospital and had his appendix removed.
RETIRED: DUST COMMANDER, winner of the 1970 Kentucky Derby, to stud.
RETURNED: To the ABA, ALEX HANNUM, coach of the Sun Diego Rockets of the NBA, us president, general manager and coach of the Denver Rockets. Hannum last coached in the ABA in 1969, when his Oakland Oaks were the champions. This will be Hannum's seventh team since 1956; with champions at St. Louis and Philadelphia.
UPHELD: A federal court decision denying CURT FLOOD'S antitrust claims against baseball; by the U.S. Circuit Court of Appeals in New York. Flood hopes to take the case to the Supreme Court.
DIED: CARL MAYS, 79, the New York Yankee pitcher whose fastball killed Cleveland batter Ray Chapman in 1920: of pneumonia; in San Diego.
DIED: WILL HARRIDGE, 85, president of baseball's American League from 1931 to 1958; following gall bladder surgery; in an Evanston, Ill. nursing home.