In a little over one week, the Tampa Bay Buccaneers have put running backs Doug Martin and Jeff Demps on injured reserve. Very soon, Mike James will join them.

James suffered a fractured ankle early in the first quarter of Monday night’s 22-19 victory against the Miami Dolphins. But the Bucs didn’t run out of running backs.

That’s because veteran Brian Leonard and the recently-signed Bobby Rainey stepped up in a big way.

Leonard carried 20 times for 57 yards and caught two passes for 16 yards. Rainey gained 45 yards on eight carries.

The Tampa Bay coaching staff has history with Leonard and a sudden confidence in Rainey. Leonard went to Rutgers, where Tampa Bay’s Greg Schiano and a bunch of his assistants, used to coach.

“When we acquired Brian, we knew what kind of young man he is and the character and the toughness and all those things,’’ Schiano said. “He certainly stepped up.’’

Leonard did what was expected of him, but it was Rainey who stepped up in more spectacular fashion. In the fourth quarter, Rainey broke off a 31-yard run, which set up his own 1-yard touchdown run that put the Bucs ahead to stay.