Liacouras Center, Philadelphia - Olympic silver medal winner Shakur Stevenson (6-0, 3 KOs) blew away Patrick Riley (12-1, 6 KOs) in the second round of a featherweight contest.

This was Stevenson's second fight of the year, after winning an eight round decision over Juan Tapia back in February.

Riley's record was very suspect, with most of his victories coming in against fighters with losing records or boxers making their pro debut.

The difference in class was fully on display in the first round. Stevenson was too quick, too good and too accurate.

He had Riley hurt in the first round and continued to punish him in the second. Riley went down from a series of punches during the second round. Once he got back up, Stevenson went for the kill and started battering him to force the stoppage - as the referee had seen enough and jumped in to wave off the contest.

In other action, Olympic gold medal winner Robson Conceicao (7-0, 4 KOs) won one-sided six round decision over Alex Rynn Torres (6-2, 3 KOs). All three judges had it 60-54.

bantamweight Christian Carto (15-0, 11 KOs) had a rough fight, but came away with an eight round unanimous decision win over Edwin Rodriguez (8-5-1, 4 KOs). The scores were 78-74 and 77-75 twice.

Junior welterweight Kent Cruz (14-0-1, 9 KOs) and Mohamed Rodriguez (10-4-1, 4 KOs) fought to an eight round majority draw. The scores were 78-74 for Cruz, 77-75 for Rodriguez, and 76-76 for the draw.

Junior lightweight Joseph Adorno (7-0, 7 KOs) had little trouble in gaining a knockout victory over Jorge Padron (3-2, 3 KOs) in the first round.