(CNN) - Oakland Raiders linebacker Vontaze Burfict has been suspended without pay by the NFL for the rest of the season -- including any postseason games -- for repeated violations of unnecessary roughness rules. When he left the field, Burfict blew kisses to the Indianapolis crowd at Lucas Oil Stadium. It is the longest punishment for an on-field act in NFL history, according to NFL.com. Burfict, who spent his first seven NFL seasons with the Cincinnati Bengals, signed with the Raiders in March. Burfict also was suspended in 2018, for four games, for use of a banned substance.