The Timberwolves and Spurs will have the NBA spotlight to themselves on Tuesday night, and that means a 7:10 p.m. CT tip time and normal bedtime for Minnesotans who have had to stay up late watching a ton of playoff basketball and hockey over the past month. With the series tied 2-2, the Wolves and Spurs are playing in one of only two competitive conference semifinal series, with the other being the Eastern Conference battle between the Detroit Pistons and Cleveland Cavaliers, who are tied 2-2 ahead of Game 5 on Wednesday night. The other series were sweeps, with Oklahoma City wiping out the Los Angeles Lakers in the West, and the New York Knicks doing the same against the Philadelphia 76ers in the East. Referee assignments for Game 5 Scott Foster and Tony Brothers won't be involved in the Wolves-Spurs game in San Antonio.…