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Billy Tully, a 29-year-old former contender drinking in Stockton's skid-row bars and picking onions and walnuts for day wages, trains his way back to a single fight against Arcadio Lucero, an aging Mexican boxer who is secretly urinating blood. He quarrels with the manager, quits boxing, and slides back into the drinking and field work he started from. The victory changes nothing, and the loser, sick and alone, is revealed to be his mirror image.
Small-time boxing converts poor men's bodies into revenue that flows upward through managers, promoters and trainers, who deduct expenses before the fighter is paid. The fighter bears all the physical risk while his earnings are set by a ledger he does not control, so even winning can leave him barely ahead. The system runs on a steady supply of men with no other exit who read a single purse as proof that escape is possible.
Read the stoop labor in the onion, tomato and walnut fields next to the ring and they turn out to be the same transaction: bodies rented by the day or the bout, paid by piece or purse, and discarded when worn out. Seeing them as one system shows that the ring is not an alternative to agricultural poverty. It is that poverty's most glamorous form of advertising.
Tully spots Ernie Munger, 18, at the YMCA and steers him toward the same manager, and Ernie then repeats Tully's path: early promise, an unplanned marriage to a pregnant girlfriend, lost fights and field work. The novel argues that decline is transmitted, not chosen. Each generation passes on its hopes along with the channels that betray them, so the older man's advice recruits the younger one into his own fate.