Rainey, a second-year player claimed off waivers from the Cleveland Browns on Oct. 21, ran for 163 yards on 30 carries and had three total touchdowns in the
Bucs' 41-28 victory over the Atlanta Falcons on Sunday at Raymond James Stadium. He became the first Bucs player to produce two rushing touchdowns and one receiving touchdown in the same game.
Rainey, 26, entered the league as a college free agent with the Baltimore Ravens in 2012. He played in college at Western Kentucky, where he produced a school-record 4,542 yards rushing and 35 touchdowns.
Rainey is the first Tampa Bay player to win the award since running back Doug Martin claimed the honor after Week 9 in 2012.
"When preparation meets opportunity," Bucs coach Greg Schiano said Monday. "This guy, (he has) an incredible work ethic. When his chance came, he was ready for it. If he had been sitting on the couch eating bonbons and not being in shape, and he got the phone call from the Bucs, the opportunity was going to come and go. That’s a good lesson for everybody."