The San Antonio Spurs have their opponent set in the Portland Trail Blazers for the opening round of the NBA playoffs following the Blazers’ play-in win against the Phoenix Suns this past week. As the Spurs prepared for Game 1 against the Blazers, they had a familiar face stop by practice in former head coach Gregg Popovich.Clutch PointsThis article originally appeared on Hoops Hype: As the Spurs prepared for Game 1 against the Blazers, …