Lost his title now John Cena has a bigger problem the return of Brock Lesnar he left him at summer slam knocked out cold

John Cena has held the world title since WrestleMania 41 when he beat Cody Rhodes to win his record breaking 17 times crushing the decades old record of 16 in wwe history books john Cena has held it fot 5 months until he lost at this years summer slam the match was a brutal street fight everything was used except for the kitchen sink but if one was out there it would've been john was about to walk out of the ring that's when yhe music hit for Brock Lesnar entrance crowd went crazy he came down and gave John Cena super f5 knocking him out cold is this going to be John's last opponent to end his career