Brock Lesnar
Brock Lesnar lost his WWE Championship to Roman Reigns recently at WrestleMania FAYEZ NURELDINE/AFP/Getty Images

Brock Lesnar could lose another title in 2019 as World Wrestling Entertainment (WWE) has not scheduled any more dates for the American as of now.

The WWE champion is set to defend his championship against Rey Mysterio at the upcoming Survivor Series, which will take place next week.

It could also mean WWE are keeping Lesnar's future schedule a secret or the company is not planning on booking Lesnar past the Survivor Series.

"A source in #WWE noted there are currently no dates listed internally for Brock Lesnar after Survivor Series. They either need to update his schedule or it’s telling of the outcome of his title defense at Survivor Series," said sports journalist Brad Shepard.

Another theory being speculated around is that Lesnar might retain the title and go on a break.

However, WWE will want to avoid such an instance because if that happened, Raw, the flagship show, will be without a champion and a championship. The more understandable case would be Mysterio pulling off a memorable win before Lesnar goes on the break.

The two WWE superstars, Lesnar and Mysterio, will be clashing against each other after more than a decade and it will be interesting to watch somebody conquer over Lesnar 15 years after Eddie Guerrero achieved the feat. Either way, according to Brad Shepard of prosportsextra.com, the fans must not expect to watch Lesnar every week after next week's event.

The 42-year-old, who has also pursued a career in Mixed Martial Arts (MAA), has had a busy year in the WWE so far. After losing to Seth Rollins at the WrestleMania 35 in April, he needed just a month to return as he made an appearance at Money in the Bank and won the Ladder Match.

After a few failed attempts to cash-in the briefcase, Lesnar finally cashed it at Extreme Rules in July to take the title off Rollins. However, he lost the title next month at SummerSlam.

The American then took a short break before he made a comeback to Smackdown and challenged Kofi Kingston for the WWE championship. At Smackdown’s Fox debut in October, he defeated the champion in less than 10 seconds. At Crown Jewel, the year's biggest WWE event that took place in Riyadh, Lesnar defeated Cain Velasquez and retained the title.