Messiah Jones had 12 points for Wofford (10-5, 7-2 Southern Conference). Larson added 12 points, including four straight from the free throw line in the last 10 seconds.
Storm Murphy, Wofford's leading scorer at 20 points per game, was held to nine.
Mercer, which trailed by as many as 18, twice cut the lead to a single point, the last time when Neftali Alvarez raced the length of the floor to make it 70-69 with three seconds left.
Larson was fouled on the inbounds and made both. An Alvarez 3-pointer hit the backboard as time expired.
Ross Cummings had 18 points for the Bears (10-6, 3-5). Alvarez added 16 points, five assists, five rebounds and three blocked shots. Leon Ayers III had nine points, all in the second half, and eight rebounds.
The Terriers improve to 2-0 against the Bears on the season. Wofford defeated Mercer 78-65 on Dec. 29.
For more AP college basketball coverage: https://apnews.com/Collegebasketball and http://twitter.com/AP--Top25
Elements of this story were generated by Automated Insights, http://www.automatedinsights.com/ap, using data from STATS LLC, https://www.stats.com
College conference commissioners pushing minimalist plan to regulate NIL
A group of commissioners -- including Greg Sankey of the SEC, Jim Phillips of the ACC and Larry Scott of the Pac-12 -- are urging their colleagues to consider a new minimalist approach to regulating college athlete endorsement deals.
NCAA president Mark Emmert tells schools to act on NIL or he will
Mark Emmert wrote in a memo Friday that if the NCAA's more than 1,200 member schools cannot pass NIL legislation by July, he would take action.
Sierra Canyon basketball continues to attract superstars
For Thursday night's regional semifinal against the Etiwanda Eagles, multiplatinum rapper Drake made his second appearance and brought award-winning actor Michael B. Jordan along with him.