Angle won his third WWE Championship from
Big Show at
Armageddon 2002, and Benoit faced him for the title at the
2003 Royal Rumble. Although Benoit lost the match, he received a standing ovation for his efforts after a very outstanding match. Benoit returned to the tag team ranks, teaming with the returning
Rhyno. At
WrestleMania XIX, the WWE Tag Team Champions,
Charlie Haas and Shelton Benjamin, put their belts on the line against Benoit and his partner Rhyno and
Los Guerreros in a triple threat tag team match. Team Angle retained when Shelton Benjamin pinned
Chavo.
Benoit feuded with
John Cena and the
Full Blooded Italians, teaming with Rhyno occasionally. In June 2003, the
WWE United States Championship was reactivated, and Benoit participated in the tournament for the belt. He beat Rhyno in the first round and then
Matt Hardy in the second, before losing the final match to Eddie Guerrero at
Vengeance 2003. The two feuded over the title for the next month, and Benoit's popularity ascended to an all-time high. He defeated the likes of
A-Train, The Big Show, and
Brock Lesnar by submission. General Manager
Paul Heyman began a vendetta against Benoit along with Lesnar, preventing him from gaining a shot at Lesnar's WWE Title.
When Benoit won a qualifying match for the
2004 Royal Rumble against the Full Blooded Italians in a Gauntlet Match, Heyman named him as the number one entry, but Benoit swore victory. On
January 25 2004 Benoit won the
2004 Royal Rumble by last eliminating Big Show, and thus earned a
WWE Championship title shot at
WrestleMania XX. As a result of the long-standing Royal Rumble tradition that the winner receives a shot at the world champion at
WrestleMania, being on the SmackDown! brand at the time, Benoit challenged for the WWE Championship. Benoit, however, exploited a "loophole" in the rules and challenged
World Heavyweight Champion Triple H. This "loophole" clause has become standard storyline practice, with the Royal Rumble winner being free to choose which title he will challenge for. With this win, Benoit became one of only two men to enter at #1 and win the Royal Rumble (the other being
Shawn Michaels at the
1995 Royal Rumble). Though the match was originally intended to be a one-on-one match, Shawn Michaels, whose
Last Man Standing match against Triple H at the Royal Rumble for the World Heavyweight Championship ended in a draw, thought that he deserved to be in the main event. When it was time for Benoit to sign the contract putting himself in the main event, Michaels
superkicked him and signed his name on the contract, which eventually resulted in a Triple Threat Match between Michaels, Benoit, and the champion, Triple H.
On
March 14 2004, at
WrestleMania XX, Chris Benoit won the
World Heavyweight Championship by forcing Triple H to tap out to his signature submission move, the Crippler Crossface. It marked the first time the main event of a WrestleMania ended in submission. (It happened again at
WrestleMania 22 and
WrestleMania 23). After the match, an emotional Benoit celebrated his win with the then-reigning
WWE Champion and best friend
Eddie Guerrero. Four years after they came to WWE together, they stood in the ring at Madison Square Garden, both of them world champions. It is considered the biggest win of Benoit's 19-year career, as he won his second official World Championship in the main event of the biggest show of the year. The match was voted the 2004
PWI Match of the Year). This was Benoit's first World Heavyweight Title reign. The rematch was held at
Backlash 2004 in Benoit's hometown of Edmonton, Alberta, Canada. This match was a Triple Threat match, which also involved Triple H and Shawn Michaels. It was Michaels who ended up submitting to Benoit's Sharpshooter, allowing Benoit to retain his title, once again proving he was worthy of the main event. The next night in Calgary, he and Edge won the World Tag Team titles from
Batista and
Ric Flair, making Benoit a double champion.
On
RAW, Benoit defeated Triple H in a one-hour
Iron Man match. Benoit scored the first fall with a pinning predicament out of a Crossface attempt. Triple H then rallied to take a 3-1 fall advantage by a Pedigree pinfall, spinebuster pinfall, and a count out decision. After Benoit evened the falls up 3-3 via Sharpshooter and Crippler Crossface submissions, he got the final pin in the match's closing seconds (due to the outside interference of
Eugene) to retain the title.
On
August 15 2004, Chris Benoit was defeated by
Randy Orton for the World Heavyweight Championship at
SummerSlam. This title change is notable because it is rare for a top face World Champion to ever
drop the title
cleanly to a heel. His reign lasted 5 months, and he gained 7 straight
pay-per-view victories. Benoit then feuded with Edge, leading to
Taboo Tuesday where Chris Benoit, Edge, and Shawn Michaels were all put into a poll to see who would face Triple H for the World Heavyweight title that night. Michaels received the most votes and as a result, Edge and Benoit were forced to team up to face the then tag team champions,
La Résistance, in the same night. However, Edge deserted Benoit during the match and Benoit was forced to take on both members of
La Résistance by himself. He still managed to win the World Tag Team titles. At
Survivor Series 2004, Benoit sided with Randy Orton's team while Edge teamed with Triple H's team, and while Edge was able to pin Benoit after a Pedigree, Orton's team won.