John Cena has pieced together a resume that one could argue is the absolute greatest in WWE history. He's a 16-time World Champion - tied with Ric Flair for the most - and it's only a matter of time until Cena breaks that record.
Cena is also a five-time United States Champion and a four-time Tag Team Champion. But like any all-time wrestling great, Cena has a handful of title reigns that stand out from the rest - as well as others that were short, lackluster, and completely forgettable.
Here's a look at the five best and the five worst title reigns of Cena's career.
10 Best: First United States Championship
Cena won his first United States Championship when he pulled off an upset against Big Show at WrestleMania XX. This marked Cena's first-ever match on The Grandest Stage of Them All, and it was a dandy.
From here, Cena would build up his popularity and stardom. He retained the United States Championship through early July until SmackDown general manager Kurt Angle took it away from him. Still, it was an impressive reign that turned Cena into one of WWE's most beloved mid-card faces, and he only trended up from there.
9 Worst: Second World Heavyweight Championship
Edge had captured the World Heavyweight Championship at the 2009 No Way Out pay-per-view, dethroning Cena as a result. However, the latter was able to defeat The Rated-R Superstar and Big Show in a triple threat match at WrestleMania XXV.
Cena didn't exactly need this title, not after Edge had just begun another special reign with it. Worse yet, Cena's second tenure with the World Heavyweight Championship lasted just 21 days before Edge regained it at Backlash.
Yeah, it wasn't the most enjoyable, relevant, or meaningful title reign for Cena. But ah well, you take the bad with the good.
8 Best: Fourth United States Championship
By this point, fans were accustomed to Cena taking part in one of the main event matches. Instead, he was pitted against Rusev as part of WrestleMania 31's mid-card, with the United States Championship on the line.
Cena defeated Rusev to win the title for the fourth time in his illustrious career, and for the first time in 11 years. It also turned out to be one of the better title reigns for Cena; he held onto it for 147 days - including successful title defenses against Dean Ambrose, Kane, and Cesaro - among others.
Finally, Cena dropped the title to Seth Rollins at SummerSlam - thanks to interference from the event's host, Jon Stewart. Cena would regain it one month later at Clash of Champions.
7 Worst: Second United States Championship
After the United States title was stripped from Cena, Booker T eventually claimed the vacant Championship. But Cena was able to regain it at No Mercy, defeating Booker in a best-of-five series to win the United States Championship for a second time.
However, Cena would drop the title on the ensuing episode of SmackDown to a debuting Carlito Caribbean Cool. So, Cena's second run with the title only lasted a mere three days. Sorry, but there was no way we could exclude this from the list!
6 Best: Second WWE Championship
Cena was able to defend his WWE Championship in an Elimination Chamber match at New Year's Revolution 2006 - but he immediately lost it after Edge used his Money in the Bank cash-in. With that, Cena's first run with the title ended.
But Cena would regain it three weeks later at the Royal Rumble pay-per-view, and he'd embark on a reign that would last 133 days. Along the way, Cena defeated Triple H at WrestleMania 22.
However, Edge interfered and helped Rob Van Dam dethrone Cena as the Champion at the ECW One Night Stand pay-per-view. With that, one of the longest reigns ever with the WWE Championship had come to an end, but it was certainly fun while it lasted.
5 Worst: World Tag Team Championships W/ Batista
John Cena and Batista teamed up to dethrone Cody Rhodes and Ted DiBiase at the Aug. 4, 2008 episode of Monday Night Raw to become the World Tag Team Champions. It was the second time Cena won the titles, having previously captured them with Shawn Michaels.
Well, this reign ended up being quite a waste of time. DiBiase and Rhodes would win them back just one week later, thus ending the brief Batista-Cena partnership. This time, it wasn't fun while it lasted.
4 Best: First WWE Championship
Cena was the last one eliminated by Batista at the 2005 Royal Rumble, but the former still got a prime opportunity at WrestleMania 21, where he challenged John Bradshaw Layfield for the WWE Championship.
A 27-year-old Cena defeated JBL to become the WWE Champion for the first time in his career. More importantly, this marked the beginning of Cena's reign as the new top babyface and main event star in WWE, a status he would hold for the next decade.
Oh, and Cena's first WWE Championship reign lasted a whopping 279 days. It included successful title defenses against top stars like JBL, Kurt Angle, and Shawn Michaels. We'd say this was one of his better reigns, indeed.
3 Worst: Fourth WWE Championship
Cena was able to defeat Randy Orton at Breaking Point 2009 to obtain the WWE Championship for the fourth time and for the first time in three years.
However, this reign didn't last long, and it wasn't exactly an enticing one by any means. He dropped the WWE title to Orton at Hell in a Cell, thus ending the reign at 21 days. This led to an ongoing pattern where Cena would lose the title (eventually to Sheamus and Batista) before promptly regaining it.
It seemed like creative was really out of ideas for Cena at this stage. We'd just love to forget Cena's fourth WWE Championship run altogether. There was nothing memorable about it, after all.
2 Best: Third WWE Championship
This is almost unquestionably the most historic, epic, and entertaining title reign in Cena's legendary career. For starters, Cena put on arguably the greatest match of his career at Unforgiven 2006, when he defeated Edge in a Tables, Ladders, and Chairs match to obtain his third WWE Championship. This event also took place in Edge's hometown of Toronto, so it made Cena's victory all the sweeter.
Cena's reign lasted 381 days, which WWE.com lists as the seventh-longest in history. Thing is, the reign ended way sooner than it was supposed to. Cena had to relinquish it after suffering a real torn pectoral muscle. Otherwise, his historic reign would have carried on even longer.
1 Worst: Fifth WWE Championship
After dropping the WWE Championship to Orton at Hell in a Cell, Cena regained it only three weeks later at Bragging Rights. Even though his reign would last 49 days, it just felt completely meaningless, as Cena had already defeated Orton numerous times.
Cena only defended the WWE Championship once, in a merely average match against Shawn Michaels and Triple H at Survivor Series. Cena finally dropped the title to Sheamus at the 2009 TLC: Tables, Ladders And Chairs pay-per-view, thus putting an end to the most unimpressive WWE Championship run of his career up to this point.