The official weigh-in event for the Strikeforce Heavyweight Grand Prix Tournament Final is set to take place today (Friday, May 18, 2012) LIVE from the HP Pavilion Concourse in San Jose, California.

The first fighter is expected to tip the scale at 7 p.m. ET.

As usual, MMAmania.com will provide the latest coverage of the Strikeforce weigh-ins, as well as provide a detailed recap of the festivities as soon as they conclude.

Set to headline the card are tournament finalists Josh Barnett vs. Daniel Cormier, who will compete for the grand prix championship and the right to challenge one more fighter under the Strikeforce banner before the promotion eliminates the 265-pound division for good.

Also getting their hands dirty (again) are Gilbert Melendez vs. Josh Thomson for "El Nino's" 155-pound belt. Their upcoming rubber match will settle a longstanding feud that began nearly four years ago.

Strikeforce live weigh in results and real-time updates after the jump:

Main Event:

265 lbs.: Josh Barnett (248) vs. Daniel Cormier (238)

Main Card (Showtime):

155 lbs.: Gilbert Melendez (153) vs. Josh Thomson (153)
205 lbs.: Rafael Cavalcante (206) vs. Mike Kyle (203)
170 lbs.: Nah-Shon Burrell (170) vs. Chris Spang (169)

Preliminary Card (Showtime Extreme):

155 lbs.: Gesias Cavalcante (156) vs. Isaac Vallie-Flagg (156)
205 lbs.: Virgil Zwicker (204) vs. Guto Inocente (205)
205 lbs.: Derrick Mehmen (205) vs. Gian Villante (205)
170 lbs.: Quinn Mulhern (170) vs. Yuri Villefort (170)
155 lbs.: Bobby Green (155) vs. James Terry (156.25)*

*Scale issue, reportedly won't have to cut any extra weight

Remember that MMAmania.com will provide LIVE blow-by-blow, round-by-round coverage of Strikeforce: "Barnett vs. Cormier," beginning with the Showtime telecast at 10 p.m. ET. In addition, we will deliver up-to-the-minute quick results of all the under card action much earlier on fight night.

For all the latest news and notes on the upcoming Strikeforce event on Showtime check out our comprehensive news archive right here.