Athletics rhymes with:
aesthetics, agrigenetics, anesthetics, asthmatics, bionetics, cadnetix, cognetics, cosmetics, diabetics, dianetics, diuretics, esthetics, genetics, helionetics, intermagnetics, kinetics, magnetics, metics, odetics, pharmakinetics, phonetics, prosthetics, synthetics
Athletics sounds like:
adults, adults', athlete's, athletes, athletes', athletic