Ohio Rev. Code § 3763.02
If a person, by playing a game, or by a wager, loses to another, money or other thing of value, and pays or delivers it or a part thereof, to the winner thereof, such person losing and paying or delivering, within six months after such loss and payment or delivery, may sue for and recover such money or thing of value or part thereof, from the winner thereof, with costs of suit.
Neither this section nor section 3763.04 of the Revised Code shall apply to any business transacted upon a regularly established stock exchange or board of trade through a member thereof whose relation to the transaction is that of broker only, and who actually delivers or receives the securities or other commodity bought or sold in accordance with the rules and regulations of said stock exchange or board of trade.
R.C. §3763.02