Both fighters miss several shots early on, before Mercado connects with a pair of body shots.
Cooney lands a damaging right uppercut, forcing Mercado to clinch.
Mercado lands a rare combination. After a clinch late in the round, Cooney connects with a three-punch salvo that again wobbles Mercado. Gerry follows up with a hard right, but the bell rings before he can continue.
Unofficial scoring: Dave Rodman has it 19-16, Cooney.