Isaiah Roby

Isaiah Roby will reportedly make $1.5 million during his rookie season with the Dallas Mavericks. 

Isaiah Roby’s decision to forgo his senior season at Nebraska for the NBA draft paid off Tuesday.

The 6-foot-8 Roby — drafted 45th overall by Detroit and then traded to Dallas — signed a four-year, $6.7 million contract with the Mavericks, according to ESPN.

Roby will be paid $1.5 million as a rookie, which according to ESPN is the largest first-year salary in NBA history for a second-round draft pick coming out of college.

Roby averaged 11.8 points, 6.9 rebounds and 1.9 assists per game last season as a junior. He shot 45.4% from the floor and 33.3% from 3-point range. In June he became the first Husker taken in the NBA draft in 20 years.

Roby, from Dixon, Illinois, wasn’t recruited heavily until his junior year of high school. He was targeted by Nebraska because former coach Tim Miles accidentally found him in a back gym during a tournament in Michigan.

After one minute of watching Roby, Miles was all-in.

“Just kinda the puppy-dog look, the big paws and the frame, and you just see him loping around out there, and I remember thinking, ‘This guy is gonna be a load,’ ” Miles told The World-Herald in June.

During a recruiting visit, Miles told Roby he wanted him to be his first NBA draft pick.

That came to fruition June 20 when Roby’s name was called in the second round.

“It was cool. It was a dream come true,” Roby told The World-Herald days after the draft. “I couldn’t be happier with my situation in Dallas, and I’m excited to get out there and get to work.”