AP Source: Karl-Anthony Towns is NBA Rookie of the Year

Undated (AP) -- Minnesota Timberwolves center Karl-Anthony Towns has been voted the NBA's Rookie of the Year, according to a person with direct knowledge of the award.

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The person spoke on condition of anonymity because the announcement has not yet been made. The NBA was scheduled to announce the winner Monday.

The No. 1 overall pick from Kentucky posted the best rookie season for a big man since Tim Duncan. He averaged 18.1 points, 10.7 rebounds and 1.7 blocks and helped the Timberwolves win 13 more games than they did the previous season.

Towns also played all 82 games and was named Western Conference rookie of the month in all six months the award was handed out.