After an electric first round of the NBA Playoffs that saw three Game 7s and several upsets, the second round has been largely chalk through four series. Two teams, the New York Knicks and Oklahoma City Thunder, are on the verge of sweeps with 3-0 series leads, while the San Antonio Spurs and Detroit Pistons appear to be in the driver’s seat of their respective series with 2-1 advantages.On Sunday, can the underdog Philadelphia 76ers and Minnesota Timberwolves inject some life into these playoff