[4] TNA issued a press release in mid-February 2008 announcing that Lockdown would be held on April 13, 2008, at the Tsongas Arena in Lowell, Massachusetts.

[6] TNA released a poster to promote the event sometimes prior featuring Kurt Angle and Samoa Joe.

[7][8] Lockdown featured eight professional wrestling matches that involved different wrestlers from pre-existing scripted feuds and storylines.

The main event was a Six Sides of Steel Cage match for the TNA World Heavyweight Championship between then-champion Kurt Angle and the challenger Samoa Joe.

Joe signed the contract, making it official if he lost the match at Lockdown he would instead quit professional wrestling forever.

[10] The feud regarding this encounter began at Final Resolution, where Roode accidentally punched Booker T's real-life wife Sharmell, fracturing her jaw in the storyline and leaving her sidelined indefinitely.

After the bout, Sharmell returned from injury attacking Roode and his manager Banks with a leather strap.

Mike Tenay and Don West were the commentators for the telecast, with Frank Trigg providing guest commentary for the main event only.

Andrew Thomas, Earl Hebner, Rudy Charles, and Mark "Slick" Johnson participated as referees for the encounters.

Joe's family were in attendance to perform a traditional Samoan fire dance during his ring entrance.

At 7 minutes and 15 seconds, Creed was eliminated by Curry Man after his signature Spice Rack maneuver.

The participants in the encounter were Angelina Love, Christy Hemme, Jackie Moore, Rhaka Khan, Roxxi Laveaux, Salinas, Traci Brooks, and Velvet Sky.

The teams participating were Black Reign and Rellik, Kaz and Eric Young/Super Eric, The Latin American Xchange (Hernandez and Homicide), The Motor City Machine Guns (Alex Shelley and Chris Sabin), Petey Williams and Scott Steiner, and The Rock 'n Rave Infection (Jimmy Rave and Lance Hoyt).

Later, Young entered the match dressed in his "Super Eric" gimmick and cuffed Rave and Hoyt to the cage.

[23] Gail Kim and ODB fought Awesome Kong and Raisha Saeed in a Six Sides of Steel Tag Team Cage match, which lasted 8 minutes and 30 seconds.

Afterwards, members from each team enter at time intervals until all wrestlers are involved in the bout so a pinfall or submission can occur.

[23] The main event was a Six Sides of Steel Cage match for the TNA World Heavyweight Championship between then-champion Kurt Angle and the challenger Samoa Joe.

The added stipulation to this bout was if Joe lost, he would be forced to retire from professional wrestling forever.

Joe then applied a Boston Crab, before switching to an STF, which Angle countered into an Ankle Lock.

Following the hold being broken, Angle performed his signature Olympic Slam maneuver on Joe for a near-fall.

The match finally came to a conclusion when Joe lifted up Angle and slammed him to the mat back-first with his signature Muscle Buster maneuver.

Joe then covered for the pinfall at 17 minutes and 45 seconds to win the TNA World Heavyweight Championship for the first time.

[1] In late 2008, the Wrestling Observer Newsletter reported that the number of pay-per-view purchasers for the event was believed to be 55,000.

Keller went on to state in his review he felt Angle versus Joe was a "really good main event".

[26] On the January 1, 2009 episode of Impact!, TNA announced their Year End Awards for 2008, with Kurt Angle versus Samoa Joe in a Six Sides of Steel Cage match for the TNA World Heavyweight Championship named Match of the Year.

[35] At the event Angle announced he received a legitimate neck injury wrestling overseas and would not be competing in the match that night.

Kaz took Angle's place in the match, which Joe won to retain the TNA World Heavyweight Championship.

[35] Team 3D, LAX, Styles and Super Eric, Christian Cage and Rhino, Robert Roode and Booker T, Sting and James Storm, B.G.

[38] TNA X Division Champion Jay Lethal later lost the championship to Petey Williams on the April 17 episode of Impact!

However, during the show Management Director Jim Cornette announced the winner would also take Angle's place in the main event.