BALTIMORE, Md. -- Johnny Manziel threw a big party Friday night that resulted in his fine for being late for treatment Saturday morning and Josh Gordon suspended for missing the Saturday walk-through, several sources told cleveland.com.

The source told told cleveland.com that Gordon, who's suspended for today's game against the Ravens, attended Manziel's party along with other members of the team.

CBS Sports' Jason LaCanfora first reported that Manziel threw the party.

By Saturday morning, team security was sent to Manziel's apartment to try to find him, because he failed to show up for treatment on his injured hamstring, and he wasn't answering his phone, a source told cleveland.com on Saturday. The source also said he was fined for being tardy.

Manziel is on injured reserve and not required to participate in the walk-through, but still had to show up Saturday morning for his scheduled treatment.

Gordon's suspension might cost him his accrued season -- and the chance to become an unrestricted free agent after next season.

A source told cleveland.com that Gordon's representatives are in talks with the Browns to try to prevent him from losing his accrued season and his shot at hitting the open market next season. If the two sides can't reach an agreement, Gordon's people will file a grievance.

The fact that Manziel threw a party the night before the Browns left for Baltimore is a huge concern, because the rookie quarterback was reprimanded last month for being involved in a fight at his downtown apartment, The 9, the night before the Browns left for Atlanta. The 9 is also one of the hottest spots in town with a number of popular bars and restaurants.

Manziel's Friday night party may have been thrown at a local bar.

Gordon's suspension followed a series of incidents in which he had been late for team meetings and fined.

Both players have vowed this season to get their act together and grow up.

Manziel said on Tuesday that he matured throughout the season and realized he needed to take his job seriously.

He must have meant next year.