Josh Hart expects Knicks to play with 'level of freedom' as playoff underdogs against Celtics

If the Knicks soon punch a ticket to the Eastern Conference Finals for the first time in 25 years, they'll achieve the long-coveted feat as undisputed underdogs. Their semifinal-round opponent is the reigning champion Boston Celtics, poised to defend the NBA's crown and reassert dominance shown during four regular-season matchups.The storied history between the Knicks and Celtics holds no weight with today's players. While this series marks the 17th playoff meeting between the division rivals --