By David P. Greisman

Boardwalk Hall, Atlantic City - Haroon Khan, younger brother of former 140-pound titleholder Amir Khan, made quick work of his designated opponent, downing Vincente Medellin twice and dispatching him in 57 seconds for a first-round technical knockout.

The first flooring came off a right hand, while the second came from a left hook to the body that led the referee to wave the fight off immediately.

Khan, a bantamweight from Bolton, England, is now 2-0 with 1 knockouts. Medellin, 25, of Riverside, Calif., is now 0-6.  

It was a bout that many had hoped would be competitive and entertaining, but Shawn Porter was simply better than Phil Lo Greco, who was outclassed and outpointed throughout this 10-round fight between 150-pound fighters.

The scores were 100-88 (twice) and 99-89, all for Porter.

Lo Greco is a bruiser, but Porter didn’t allow himself to be bruised, not when he could hold Lo Greco at bay with his movement, as well as with faster and crisper combination punching that hurt Lo Greco often and dropped him twice.

The first knockdown came at the end of the eighth round, when Porter landed a counter right hand over Lo Greco’s jab. The second knockdown came in the 10th and final round after a pair of Porter left hooks, effectively ending Lo Greco’s aggressive attempt to pull out the win, placing Lo Greco on the defensive for the remainder of the stanza.

Porter, 25, of Akron, Ohio, improves to 21-0-1 with 14 KOs, the draw coming against Julio Diaz late last year. Lo Greco, 28, of Toronto, suffered his first defeat and is now 25-1 with 14 KOs.  

Thomas Williams Jr. didn’t get the prettiest victory in a fight against the toughest opponent yet in the light heavyweight prospect’s career, but he did get some valuable experience while taking an eight-round unanimous decision over Otis Griffin (the winner of the long-ago boxing reality show “The Next Great Champ”).

The scorecards were 79-73 (twice) and 80-72.

Williams had only gone beyond four rounds once before in his 13 pro fights, and had never gone beyond five. He often loaded up on punches against Griffin, who easily eluded them and often made Williams whiff badly. But Griffin — who had lost six of his past seven and had been in with light heavyweights of various repute — wasn’t overly interested in sustained offense. Williams occasionally would land a good, hard shot. While Griffin did land on occasion, he never had Williams in danger.

Williams, 25, of Fort Washington, Md., improves to 14-0 with 10 KOs. He will need to learn how to vary his offense against opponents who have the ability and intelligence to handle him. Griffin, 35, of Sacramento, Calif., falls to 24-13-2 with 10 KOs.

British Olympic bronze medalist Anthony Ogogo won his second pro bout in what appeared to be a glorified six-round sparring session — albeit one that aired as the opening bout to the Showtime Extreme undercard broadcast — with a unanimous decision over Edgar Perez.

The scorecards were 60-54 (twice) and 60-53.

Ogogo, a middleweight, worked behind a regular body attack and plenty of right hands upstairs. Perez, meanwhile, offered little in the way of resistance, and what resistance he did offer rarely was effective.

Ogogo, 24, of Lowestoft, Suffolk, is now 2-0 with 1 KO. Perez, 34, of Puerto Rico, is now 5-5 with 3 KOs

 

Former 115-pound title challenger Cesar Seda — now fighting in the 122-pound division — won a unanimous eight-round decision over Miguel Tamayo.

The scores were 79-73, 80-72 and 80-70. The 80-70 card had the judge giving Seda 10-8 rounds in the sixth and eight rounds.

Seda, a 27-year-old from Puerto Rico, improves to 25-1 with 17 KOs, his lone loss coming in 2011 to beltholder Omar Narvaez. Tamayo, who hails from Sonora in Mexico, falls to 14-6-2 with 12 KOs, according to BoxRec.com — and 13-6-2 with 11 KOs, according to FightFax.

A bout between Anthony Peterson and Dominic Salcido came to an abrupt end before the third round could begin, with the fight being called off due to what ring announcer Joe Antonacci said was Salcido suffering a broken nose.

Salcido looked as if he was protesting the stoppage. This was only his second fight since 2010 — he returned from a long layoff and met lightweight prospect last July, losing a 10-round unanimous decision.

Peterson also was coming off an extended time away from the ring. His last appearance had been in December 2011, and that bout itself had been his first since his September 2010 loss to Brandon Rios.

This win over Salcido didn’t give Peterson the rounds he needed, but it did bring the record of the 28-year-old from Washington, D.C., to 32-1 with 21 KOs. Salcido, 29, of Rialto, Calif., is now 18-5 with 9 KOs.

Whatever lack of power Rau’Shee Warren had shown early in his pro career meant little to this opponent, Angel Carvajal, who was subjected to six knockdowns in less than four rounds en route to a technical knockout win for Warren.

Warren — an American Olympian who lost in the first round of the 2004 and 2008 Olympics and in the second round in 2012 — has since turned pro as a bantamweight. He won his first two pro fights by decision, then knocked down an 0-5 foe twice this past February en route to a second-round stoppage.

This time, against a 2-1 foe named Angel Carvajal, Warren landed right hooks and uppercuts from both hands, scoring two knockdowns in the first, two in the second, one in the third and the final flooring in the fourth.

Carvajal rose with about a minute to go in the fight, but the referee had seen enough. The time of the stoppage was 2 minutes and 5 seconds into the round.

Warren, 26, of Cincinnati, is now 4-0 with 2 knockouts, according to BoxRec.com — though FightFax includes Warren's fights with the World Series of Boxing and now has him at 12-0 with 2 KOs. Carvajal, 29, of Chicago, is now 2-2 with zero knockouts.

Lightweight prospect Robert Easter Jr. got what his handlers were looking for, and little else — another win for his record as he continues on through the earliest stages of his pro career.

This win came over Eduardo Guillen, a winless fighter from Brownsville, Texas, who flailed amateurishly, took hard left hooks to his chin, went down twice in the second round and ultimately lost by technical knockout.

Guillen went down in a heap on the first knockdown, which resulted from a picture-perfect left hook that had been landing regularly for Easter. Somehow Guillen got up from his back, though he wouldn’t remain standing for long. Another left hook upstairs a little later led to a delayed knockdown, with Guillen going down to a knee and the referee waving the fight off.

Easter, of Toledo, Ohio, is now 4-0 with 4 KOs. Guillen is 0-3.

American Olympian Jamel Herring had little difficulty picking up his third pro victory, scoring two knockdowns over a clearly outmatched Victor Galindo en route to a first-round technical knockout.

Herring competed at junior welterweight in the 2012 Olympics, losing in the first round of competition. Now a lightweight, he put Galindo down early in the opening round, then soon scored a second knockdown on the strength of a sustained body attack. Galindo rose again, but his corner had seen enough and ascended the ring steps with a white towel in hand.

The stoppage came 2 minutes and 1 second into the round.

Herring, 27, of Coram, N.Y., is now 3-0 with 2 knockouts. Galindo, who hails from San Juan, Puerto Rico, is 1-2 with 1 knockout.