PHILADELPHIA – Vito Mielnicki Jr. went the distance Saturday night for the first time in four professional fights.

Mielnicki remained unbeaten, though, as he soundly defeated Preston Wilson on the scorecards. Judges each scored all four rounds for Mielnicki, who won 40-36 on their cards in a fight FS1 aired as part of the Julian Williams-Jeison Rosario undercard at Temple University’s Liacouras Center.

The 17-year-old Mielnicki (4-0, 3 KOs), of Roseland, New Jersey, boxed beyond the second round for the first time since the West Essex High School senior made his pro debut July 13 at Prudential Center in Newark, New Jersey.

The 27-year-old Wilson (6-4-1, 4 KOs), of Parkersburg, West Virginia, is 2-3-1 in his past six bouts. He has lost by knockout just once since making his pro debut in March 2014.

Mielnicki pressed for the knockout throughout the fourth round, but Wilson withstood the power shots Mielnicki landed and made it to the final bell. Mielnicki caught Wilson with a combination and then a straight right hand a little over a minute into the fourth round.

Mielnicki’s left hook caused Wilson to hold him with about 1:10 to go in the third round.

A right hand by Mielnicki moved Wilson backward about 35 seconds into the second round. Wilson connected with a flush left, but Mielnicki took that shot well with about 30 seconds to go in the second round.

Wilson landed a short left hand about 50 seconds into their fight that knocked Mielnicki off balance. Mielnicki landed a left hook up top and a right to the body later in the opening round. 

Keith Idec is a senior writer/columnist for BoxingScene.com. He can be reached on Twitter @Idecboxing.