Holman signed a 10-day hardship contract with the Heat on Wednesday, Adrian Wojnarowski of ESPN reports.
Holman, who was playing in the G League for the Austin Spurs, will join the Heat in San Antonio to hopefully avoid a postponement of Wednesday's contest. With the addition of Holman, Miami currently has nine active players, including KZ Okpala who is questionable with a wrist injury. Holman will likely only be available in an emergency situation.