In the 1990 NBA Finals against the Portland Trail Blazers, Dumars averaged 20.6 points, including 33 points in a pivotal Game 3 win that took place the same day his father had died. With his father's death imminent, Dumars had instructed his wife, Debbie, not to tell him any news about his condition until after the game. However, Debbie did tell Isiah Thomas, who told the rest of the team. After the game, Thomas spoke about an off-balance prayer Dumars tossed up that somehow went in the basket, saying his first thought was, "Your father put that one in, Joe."