NBA playoff viewership continues to trend above last year, with the Celtics-Knicks series producing a pair of big gains for Games 3 and 4. Through Monday, NBA playoff games are averaging 3.7 million viewers across ESPN, ABC, TNT and NBA TV, with that figure rising to 4.05 million with NBA TV excluded — up 5 and 6 percent respectively from last year. Second round games are averaging 4.83 million, up 5% from last year’s 4.58 million. Monday’s Celtics-Knicks second round Game 4 averaged 6.13 million viewers on ESPN, up 50% from Celtics-Cavaliers the same night last year, which aired on TNT (4.09M). The Knicks’ win, which peaked with 8.54 million, delivered the second-largest audience of the playoffs on cable. (Warriors-Rockets Game 7 averaged 6.63 million on TNT in the first round.)