Bradley (10-2) is off to its best start since beginning the 1985-86 season with a 31-1 record.
Luuk van Bree chipped in 14 points and Nate Kennell 12 for Bradley, which has won back-to-back road games. The Braves entered as the nation's fourth-ranked defense, allowing only 58.5 points per game.
Brown scored six points during Bradley's 16-5 run to close the first half for a 41-29 lead. Childs had 13 points and six rebounds at the break.
Mahoney sank a deep 3-pointer just before the halftime buzzer for SEMO's second field goal in the final five minutes of the half.
Mississippi Valley St. hires ex-NBA player Hunter
Lindsey Hunter, a Mississippi native who played 17 seasons in the NBA, has been hired as head coach of Mississippi Valley State.
Source: Auburn's Okeke declares for NBA draft
Auburn sophomore Chuma Okeke has made himself eligible for the 2019 NBA draft, a source told ESPN.
Western Kentucky C Bassey declares for draft
Charles Bassey plans to test the NBA draft waters, after a breakout freshman year at Western Kentucky.