Martinez averages the sixth most minutes on the team.
Derrick Walker and Keisei Tominaga scored a combined 43 points as the Cornhuskers downed the Terps in overtime.
The win is the Terps' first over a top-five team since January 2016.
The Terps held Pickett under his season average in points, rebounds and assists.
Hart notched the highest-scoring Big Ten game of his career as he finished with a game-high 23 points, adding five rebounds and four assists.
The Terps made just three of their 22 three-point attempts in a close loss to the Spartans.
The Terps are in a six-way tie for third place in the Big Ten with a 7-5 conference record.
The Terps eased past the conference bottom feeders in their joint largest ever Big Ten victory.
The Terps notched their third-worst shooting performance from the field, but used stellar defense to beat the ranked Hoosiers by double digits.
The Terps posted 16 assists in their win against Nebraska, tied for their season high.