Patrick Mahomes believes Justin Tucker being all up in his space before the AFC Championship Game was no accident ... claiming the Ravens kicker's pregame run-in was an attempt to get under the Chiefs' skin.
The incident was all the talk before kickoff on Sunday ... with Mahomes and Travis Kelce getting into it with the veteran NFL kicker over his spot on the field while both sides were trying to warm up for the big playoff game.
Tucker downplayed the incident on Monday .