Mohibullah and Hashim Khan, two Pakistanis who practically own the game of squash-racquets, will play an exhibition match for Harvard enthusiasts Wednesday at 5:30 p.m. in Hemenway Gymnasium.

Mohibulla Khan became the world's top player last year when he dethroned his uncle, Hashim, in the finals of the United States Open. This year, without Hashim's competition, he breezed through the championship round in 20 minutes.

A 5-7 left-hander, Mohibulla may be the Fastest player ever. Only Hashim could possibly dispute it.

Hashim Khan is definitely the greatest squash player of all time. Although he did not compete in Western tournaments until he was 15 years beyond his prime, Hashim has built up a record twice as impressive as that of any one else in the game's history. He has won more than 20 major championships, including several British opens, three U.S. Opens, three Canadian Opens, and five British Professional Championships.

The New Yorker last year called him "the greatest athlete for his age that the world has ever seen". Hashim denies that he is more than 50 years old, but friends say that 57 is closer to the truth. And he is second only to his several years younger than Hashim.

What's even more amazing is that squash is a young man's game; players often retire from competition before they reach 30.

The stocky Hashim does not look like any kind of an athlete. He is bald, har bandy legs, and is only 5-51/2; his weight in the last 15 years has soared from 117 to 150. But when he starts to move to the court, it is a sight to behold.

When he and Mohibullah pair off Wednesday, some shot-making and shot-retrieving will undoubtedly follow.