NEW YORK — As with any Sunday afternoon here, there were a lot of star-studded matinees in town. But this time, one of the best was across the East River from Broadway. On the Barclays Center’s hardwood stage in Brooklyn, North Philly’s Kahleah Copper was in town with Candace Parker and the reigning WNBA champion Chicago Sky. Across the floor, there was Sabrina Ionescu, the electric guard leading a New York Liberty team with four wins in its last five games. The tone was set early when Copper opened the game by hounding Ionescu on the ball. And Ionescu tried to return the favor a few times, ev…
