Baylor had a 16-point lead erased just after halftime, but the Bears pulled away with a 13-2 run in the second half.
Austin was 11 of 19 from the field. Cory Jefferson added 10 points for Baylor (6-3), which snapped a two-game home losing streak.
Baylor led 35-19 in the first half before Lamar came back to tie it early in the second. Trailing 38-31 at halftime, Lamar outscored Baylor 11-4 to open the second half. Amos Wilson and Donley Minor had consecutive baskets to tie the game at 42 with 17 minutes remaining.
Baylor was up 58-55 before going on its 13-2 spurt.
Nike Men's Baylor Bears Green Basketball Practice ELITE Stripe ShortsShop
ESPN's Dan Dakich joins The Paul Finebaum Show to discuss the SEC's presence in the NBA Draft.
Ted Kapita was the top-rated recruit from West Virginia in the class of 2015 and recently played at DME Academy in Florida.
With the Suns drafting Tyler Ulis, they now have five guards on their roster who attended Kentucky.
|Stephen F. Austin||18-0||-||28-6|
|Sam Houston State||12-6||6||18-16|