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The Oxford Eagle, Bruce Newman) NO SALES MAGS OUT MANDATORY CREDIT, Associated Press
Mississippi fans cheer during an NCAA college basketball game against Mississippi State in Oxford, Miss., Wednesday, Jan. 18, 2012.

OXFORD, Miss. — Reginald Buckner scored a career-high 19 points, added 15 rebounds and Mississippi upset No. 18 Mississippi State 75-68 on Wednesday night.

Nick Williams added 17 points and Jarvis Summers had 12 to help Ole Miss (12-6, 2-2 Southeastern Conference) beat its in-state rival for the first time in six attempts.

Buckner is usually known for his defense and is the school's career leader in blocked shots. But he scored with regularity against the Bulldogs, going 8 of 10 shots from the field as the Rebels shot 50 percent as a team.

Renardo Sidney led Mississippi State (15-4, 2-2) with 17 points. Arnett Moultrie had his ninth double-double of the season with 10 points and 12 rebounds.