The Minnesota Timberwolves were forced to finish their series-clinching win over the Phoenix Suns without Chris Finch -- the head coach suffered a painful knee injury after his own player crashed into him on the sidelines ... and it was so bad, he had to be helped off the court.
The unfortunate incident went down in the closing minutes of the fourth quarter on Sunday ... when Wolves guard Mike Conley took the ball up the court and bumped into Suns star Devin Booker.