Among the rule changes for this Texas-sanctioned bout — which also includes shorter two-minute rounds and an eight-round total — the fighters both agreed to put on 14-ounce boxing gloves.

The boxing gloves will weigh 14 ounces rather than the standard 10-ounce gloves typically used in sanctioned pro fights by boxers who weigh 147 pounds or more. Tyson is widely expected to benefit ...