San Diego Chargers-- Ed White retired because of a bad knee. White, 39, remains with the club as an assistant line coach. Miami Dolphins -- Signed K Mike Rendina. New York Jets -- Placed CB Bobby Jackson on recallable waivers. Jackson, 29, has suffered from hamstring injuries. New Orleans Saints -- Signed RB Reuben Mayes to three one-year contracts. New England Patriots -- Signed free agent PK Geoff Hart and P John Starnes. Tampa Bay Buccaneers -- Signed DB Rod Jones, the 25th player selected in the NFL draft in April, to a four-year contract. BASEBALL Philadelphia Phillies -- Traded LHP Mike Madden (1-2, 4.08 ERA) to Houston Astros for RHP Rocky Childress (1-9, 4.84 in AAA). Minnesota Twins -- Traded RHP John Butcher (0-3, 6.30) to Cleveland Indians for LHP Neal Heaton (3-6, 4.24). Milwaukee Brewers -- Put Paul Molitor (hamstring injury) on 15-day disabled list; called up RHP Bob Gibson. San Diego Padres -- Extended contract of General Manager Jack McKeon through 1989.Cincinnati Reds -- Returned RHP Mario Soto to the 15-day disabled list; called up RHP Carl Willis from Class AAA Denver. HOCKEY U.S. Amateur Hockey Association -- Appointed Dave Peterson, 55, coach of the U.S. Olympic hockey team. SOCCER Yugoslavian Football Association -- Annulled the result of the First Division championship final round, played June 14, because of charges some of the matches may have been fixed; ordered all nine matches of the round be replayed June 29.