Baker had a 3-pointer early in overtime and made two pairs of free throws in the final 34 seconds with each trip to the line extending the Huskies (6-5) lead to four.
Johnson pulled NIU into the lead from a 56-52 deficit with back-to-back 3-pointers in the final two minutes of the second half. Taylor Johns then tied the game for UC Riverside (7-6) on a right-handed jump hook shot with 32.6 seconds left.
NIU had less field goals and 3-pointers than Riverside but shot 26 of 35 from the foul line. Three of the Highlanders fouled out.