Johnson, averaging 6.2 points in 117 career NBA games, also scored 21 in a win at Toronto on April 16.
Johnson was dealing with a dislocated finger. Hew had nine points and six boards in the loss to the Heat on Tuesday.
Johnson has 31 points and 17 rebounds in his last two games.
The 28-year-old Johnson averaged 6.4 points and 4.0 rebounds in 56 games. He led the team by making 51.3 percent of his shots from the field and ranked fourth in rebounds. The 6-foot-8, 255-pound Johnson was the NBA's rookie of the month for April.
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