Nate Diaz (left) and Jim Miller square off Saturday in a pivotal lightweight contender bout. (Photo courtesy of MMAJunkie.com)

East Rutherford, N.J. - Lightweight contenders Jim Miller and Nate Diaz were both on weight Friday for their main event fight at UFC on FOX 3.

Both Diaz and Miller weighed in at an even 156 pounds for Saturday night’s clash, which headlines the UFC’s third network broadcast on FOX. Diaz, who had originally been promised a title shot with a win over Miller, looked lean and healthy for what will be his third fight at 155 since dropping back down from the welterweight division. Diaz is 3-3 in his last six fights, but has turned a corner with thoroughly impressive victories over Takanori Gomi and Donald Cerrone in his two most recent bouts. He earned Submission of the Night and Fight of the Night bonuses, respectively, in those wins.

Miller, a New Jersey native, is 10-2 in his UFC career and is coming off a first-round submission of Melvin Guillard in his previous fight. A loss to current UFC lightweight champion Benson Henderson in August 2011 snapped a seven-fight winning streak that dated back to July 2009.

Ariel Helwani reported Friday that, in a last minute change-up, the winner of Saturday’s Miller-Diaz fight will now face Anthony Pettis to determine the No. 1 contender. With Henderson’s rematch with former champ Frankie Edgar likely to take place in September that would leave a nine-month wait for the next No. 1 contender, so another rung on the ladder has been added for the Miller-Diaz winner.

Co-headliners Josh Koscheck (170.5) and Johny Hendricks (170.5) were both on weight for their welterweight battle that is set to give Hendricks a title shot if he can emerge victorious. Hendricks initially weighed in at 171.5 before stepping behind the towel to shed the remaining clothing weight.

The only fighter not to make weight was flyweight John Lineker, who came in one pound over at 127 pounds for his fight against Louis Gaudinot. Fighters typically have two hours to lose the weight, but Lineker was denied the opportunity to cut any additional weight by the commission doctor. He was fined $1,200 for missing weight. That money now goes to Gaudinot.

The official UFC on FOX 3 weigh-in results include:

Main card: (FOX, 8PM ET/5PM PT)

Nate Diaz (156) vs. Jim Miller (156)

Josh Koscheck (170.5) vs. Johnny Hendricks (170.5)

Alan Belcher (186) vs. Rousimar Palhares (186)

Pat Barry (244) vs. Lavar Johnson (253)

Preliminary card: (Fuel TV, 5PM ET/2PM PT)

Tony Ferguson (154.5) vs. Michael Johnson (156)

John Dodson (126) vs. Tim Elliot (125)

John Hathaway (169) vs. Pascal Krauss (169)

Louis Gaudinot (126) vs. John Lineker (127)

Danny Castillo (155) vs. John Cholish (155.5)

Dennis Bermudez (145.5) vs. Pablo Garza (145)

Preliminary card: (Facebook, 4PM ET/1PM PT)

Roland Delorme (135) vs. Nick Denis (135)

Mike Massenzio (184) vs. Karlos Vemola (185)

*Lineker was fined $1,200 for missing weight and was denied the opportunity to cut any additional weight by the NJ commission doctor.