Nothing impossible about putting together a good sports sf anthology; see Edward Ferman and Barry Malzberg's delightful Arena (1976). But the usually dependable Cart must have scraped some pretty obscure barrels to come up with, say, Arthur C. Clarke's exquisitely insipid story of a sun-yacht race (disinterred from a 1964 Boy's Life). Keith Laumer's cyborg boxing match is--well, not precisely the liveliest thing here, but maybe the least dull. Among the rest: Clifford Simak's space-polo game; an early and undistinguished tale of an extraterrestrial race by Robert Silverberg and Randall Garrett; one of Poul Anderson and Gordon R. Dickson's Holm stories (two alien baseball teams re-enacting ""Casey at the Bat""). From all concerned, industrious pablum.