The Tampa Bay Buccaneers started four different tailbacks during the first half of the 2016 season and handed off to five different runners. Russell Hansbrough could be the sixth.
The Buccaneers' backfield merry-go-round has been caused by an unusually clustered string of injuries, the most recent of which has landed veteran running back Antone Smith on injured reserve. He and defensive end Howard Jones were placed on IR on Monday after sustaining season-ending knee injuries in Thursday night's game against Atlanta.
Hansbrough was promptly promoted from the practice squad to the active roster for the second time this season. One spot on the 53-man roster remains open as the Buccaneers begin a week of practice in preparation for Sunday's game against the Chicago Bears.
Photos of the Buccaneers' complete roster.

2 K John Lunsford

3 QB Jameis Winston

4 QB Ryan Griffin

9 P Bryan Anger

10 WR Adam Humphries

11 WR DeSean Jackson

13 WR Mike Evans

14 QB Sean Renfree

15 WR Josh Huff

16 WR Freddie Martino

17 WR Donteaa Dye

18 WR Bernard Reedy

19 K Roberto Aguayo

22 RB Doug Martin

23 S Chris Conte

24 CB Brent Grimes

25 RB Blake Sims

26 CB Josh Robinson

27 S J.J. Wilcox

28 CB Vernon Hargreaves

29 DB Ryan Smith

31 CB Cody Riggs

32 RB Jacquizz Rodgers

34 RB Charles Sims

35 CB Javien Elliott

36 RB Quayvon Hicks

37 S Keith Tandy

38 CB Jude Adjei-Barimah

39 S Isaiah Johnson

43 RB Peyton Barber

44 RB Russell Hansbrough

45 TE Alan Cross

46 FB Austin Johnson

49 LS Dax Dellenbach

52 LB Cameron Lynch

53 LB Adarius Glanton

54 LB Lavonte David

57 DE Noah Spence

58 LB Kwon Alexander

59 LB Devante Bond

60 G Jarvis Harrison

61 C Josh Allen

62 C Evan Smith

64 OT Kevin Pamphile

65 LS Garrison Sanborn

66 OT Leonard Wester

67 C James Stone

68 C Joe Hawley

69 OT Demar Dotson

70 OL Michael Liedtke

71 DE Channing Ward

72 C Ben Gottschalk

73 G J.R. Sweezy

74 G Ali Marpet

75 DT DaVonte Lambert

76 OT Donovan Smith

77 OL Caleb Benenoch

81 TE Tevin Westbrook

84 TE Cameron Brate

86 TE Kivon Cartwright

87 WR Derel Walker

88 TE Luke Stocker

90 DE Chris Baker

91 DE Robert Ayers

92 DE William Gholston

93 DT Gerald McCoy

94 DE George Johnson

96 DE Ryan Russell

96 DE Sealver Siliga

98 DT Clinton McDonald

K Nick Folk
Starting tailback Doug Martin hasn't played since Week Two thanks to a hamstring injury that he later aggravated in Week Five. His replacement and the second half of the backfield duo that was so effective in 2015, Charles Sims, was placed on injured reserve in Week Five due to a knee injury. Jacquizz Rodgers, who was signed in Week Two of the regular season, helped cover for those absences by rushing for 324 yards in three starts against Carolina, San Francisco and Oakland but suffered a foot injury on his last carry in the Raiders game. He was unavailable on Thursday night and his status for Week 10 has not yet been determined.
Hansbrough (5-9, 195) was first promoted from the practice squad in Week Five and he played in the Buccaneers' Monday Night Football win over Carolina, though he did not log a carry or a catch. He first signed with the Buccaneers as an undrafted free agent out of Missouri in May and began the season on Tampa Bay's practice squad. After the Panthers' game, Hansbrough was waived and then re-signed to the practice squad. During the preseason, Hansbrough carried 22 times for 50 yards and snared seven receptions.
Smith and Jones are the sixth and seventh Buccaneers to be placed on injured reserve this season, and five of those are either running backs or defensive ends. Smith, who was signed on October 17, recorded 10 carries for 47 yards and six receptions for 77 yards in three games with the Buccaneers. Jones played in each of the first eight games, contributing one tackle, one quarterback hit and one fumble recovery, plus two stops on special teams.