Whatever it is that you are saying can change with one Mendy injury. Also, I may not know my facts about this "Mendenhall is a good back in short yardage situations", but I can say that majority of Steelers posters that I have read threads of do not agree with that assessment. Food for thought.
If Mendenhall were to be injured for an extended period, Mewelde Moore would become the bell cow back. He's the only other back on the roster who can be out there all three downs, and while Dwyer would definitely get more of an opportunity to show his stuff, Moore would get the bulk of the carries. As for the Steelers problems in short yardage last year, that's a bit of a misnomer. First off, NFL teams simply don't run the ball on third down unless it's from 3rd and 2 and in. On 3rd and 3, NFL teams across the board passed the ball in those situations 81% of the time last season.
The Steelers actually converted 6 of 7 4th and shorts on the season (all from a yard or more out). They had 7 carries on the year on either first or second down from out to 2 yards from the opponents endzone, scored on all 7 of those carries. If we include those two situations to the rest of the possible short yardage situations, the Steelers were actually fifth in the NFL. So I do think it's a bit misleading to just say the Steelers struggled in short yardage last season. More of this can be found here:
http://www.footballoutsiders.com/extra-poi...d-short-yardage Their main struggles came as they were approaching the red zone, as well as in long goal to go situations (8 or more yards). Some of that falls on the play calling, some of that also falls on guys simply dropping potential TD passes (Ward, Mendenhall, Miller, Holmes, and Wallace, not to mention Limas Sweed dropping a TD at Cincinnati) were all guilty of this at various times throughout the season. Guys just didn't execute in goal line situations.
I read the article. I will provide data, hijack the thread a little, but will come back to the point.The article and the comments thereafter indicate how statistics can be tweaked, or used as pleased.
Also I should further indicate that though it is common notion that we do use percentages for every single data set, it is a misleading tool when the data is few. As an example, Big Ben passed to Mendenhall twice in what the article defines as 3rd and short or 4th down conversions. One was a completed pass and the other one was not. I think it would be a mistake to deduct that Mendenhall successfully converted 50% of those passes last year, because the 50% number will stick for future reference.
Here is all the data that I have compiled from play-by-plays of each game of Steelers in 2009. The data contains all 3-1, 3-2 plays as well as all 4-1 and 4-2 plays that were not punts or field goals. There aggregate total for such plays is 50.
Week Position Action1 3-1-TEN45 (10:37) W.Parker right guard to TEN 45 for no gain (S.Tulloch, K.Vanden Bosch).1 3-1-TEN9 (3:46) M.Moore right guard to TEN 9 for no gain (W.Hayes).1 4-1-TEN9 (3:02) (No Huddle) PENALTY on PIT-B.Roethlisberger, Delay of Game,1 3-1-TEN48 (12:02) (Shotgun) B.Roethlisberger pass short middle to S.Holmes to TEN 37 for 11 yards (N.Harper).1 3-2-TEN22 (9:01) B.Roethlisberger sacked at TEN 41 for -19 yards (J.Jones).1 3-2-PIT13 (11:39) (Shotgun) B.Roethlisberger pass short right to H.Miller to PIT 21 for 8 yards (D.Thornton).2 3-1-PIT40 (10:52) (Shotgun) B.Roethlisberger sacked at PIT 31 for -9 yards (A.Brown).2 4-1-CHI1 (5:02) B.Roethlisberger pass short right to M.Spaeth for 1 yard, TOUCHDOWN [A.Adams].2 3-2-CHI25 (3:29) B.Roethlisberger pass incomplete deep left to S.Holmes.3 3-1-CIN1 (7:40) W.Parker left tackle to CIN 1 for no gain (R.Williams; J.Fanene).3 3-2-CIN33 (1:58) (Shotgun) B.Roethlisberger pass short right to M.Wallace to CIN 27 for 6 yards (R.Williams, J.Joseph).3 3-2-PIT33 (4:00) (Shotgun) B.Roethlisberger pass short middle to H.Miller to PIT 37 for 4 yards (Dh.Jones).3 3-2-PIT45 (2:00) (Shotgun) B.Roethlisberger pass short middle to H.Ward to CIN 41 for 14 yards (C.Crocker).4 3-1-PIT30 (6:54) R.Mendenhall left tackle to PIT 30 for no gain (J.Cesaire; S.Cooper).4 4-1-PIT30 (6:23) (Run formation) B.Roethlisberger up the middle to PIT 33 for 3 yards (L.Castillo; A.Boone).4 3-1-SD28 (1:58) B.Roethlisberger up the middle to SD 26 for 2 yards (B.Siler; T.Dobbins).5 3-2-PIT47 (6:54) (Shotgun) B.Roethlisberger pass short left to M.Moore to DET 47 for 6 yards (L.Foote).6 3-1-CLE14 (1:19) R.Mendenhall right guard to CLV 14 for no gain (E.Barton; B.McDonald).6 4-1-CLE14

35) (No Huddle) B.Roethlisberger up the middle to CLV 13 for 1 yard (S.Rogers).6 3-1-CLE42 (8:45) B.Roethlisberger pass short right to R.Mendenhall to CLV 40 for 2 yards (E.Barton).7 3-1-PIT32 (1:05) (No Huddle, Shotgun) M.Moore left end to PIT 38 for 6 yards (T.Johnson; E.Henderson).7 3-1-MIN18 (12:29) B.Roethlisberger scrambles left end to MIN 16 for 2 yards (B.Sapp).7 3-2-PIT31 (3:13) (Shotgun) B.Roethlisberger pass incomplete short left to S.Holmes.7 3-2-PIT31 (10:49) (Shotgun) B.Roethlisberger pass incomplete deep middle to H.Ward (K.Paymah).8 BYE 9 3-2-PIT31 (5:42) (Shotgun) B.Roethlisberger pass short right to M.Wallace pushed ob at PIT 42 for 11 yards (A.Goodman).10 3-1-CIN12 (14:04) R.Mendenhall right guard to CIN 12 for no gain (P.Sims, D.Peko). Official measurement.10 4-1-CIN12 (13:35) B.Roethlisberger up the middle to CIN 11 for 1 yard (D.Peko; R.Geathers).10 3-1-CIN39 (9:03) M.Moore left tackle to CIN 27 for 12 yards (C.Ndukwe, L.Hall).11 3-1-PIT29 (9:33) R.Mendenhall left tackle to PIT 29 for no gain (T.Hali).11 3-1-KC18 (10:04) R.Mendenhall up the middle to KC 9 for 9 yards (J.McGraw).11 4-1-KC26 (1:02) R.Mendenhall left tackle to KC 22 for 4 yards (J.McGraw).11 3-2-KC39 (4:47) (Shotgun) M.Moore up the middle to KC 35 for 4 yards (J.Belcher, T.Hali).11 3-2-KC35 (10:43) M.Moore right end to KC 38 for -3 yards (J.Belcher).12 3-1-PIT35 (1:28) W.Parker right guard to PIT 37 for 2 yards (J.McClain, J.Johnson).12 3-1-BAL45 (10:16) D.Dixon up the middle to BLT 43 for 2 yards (K.Gregg, H.Ngata).12 3-1-PIT32 (13:36) D.Dixon up the middle to PIT 33 for 1 yard (D.Landry).13 3-1-OAK5 (1:56) R.Mendenhall up the middle to OAK 5 for no gain (S.Williams, G.Warren). Official measurement.13 4-1-OAK5 (1:28) B.Roethlisberger up the middle to OAK 5 for no gain (S.Williams; R.Seymour).13 3-1-PIT29 (9:51) R.Mendenhall up the middle to PIT 33 for 4 yards (R.Seymour; T.Branch).13 3-1-OAK49 (4:05) R.Mendenhall right guard to OAK 47 for 2 yards (K.Morrison; T.Branch). 14 3-1-PIT32 (3:13) R.Mendenhall right tackle to PIT 32 for no gain (D.Bowens). Time out for a measurement14 4-1-PIT32 (2:52) B.Roethlisberger up the middle to PIT 34 for 2 yards (C.Williams, R.Smith).14 3-1-PIT24 (10:58) (Shotgun) B.Roethlisberger sacked at PIT 15 for -9 yards (C.Williams).14 3-1-PIT21 (13:27) (Shotgun) R.Mendenhall right tackle to PIT 25 for 4 yards (B.McDonald).14 3-1-PIT41 (4:18) R.Mendenhall right guard to PIT 46 for 5 yards (M.Benard, M.Adams).16 3-2-PIT35 (7:55) (Shotgun) B.Roethlisberger pass short left to M.Wallace to BLT 39 for 26 yards (D.Foxworth; D.Landry).16 3-2-BAL24

44) (Shotgun) B.Roethlisberger pass short right to S.Holmes for 24 yards, TOUCHDOWN. 17 3-1-MIA10 (9:34) R.Mendenhall right guard to MIA 7 for 3 yards (K.Langford).17 4-1-PIT42 (2:06) B.Roethlisberger up the middle to PIT 44 for 2 yards (K.Langford).17 3-2-MIA3 (14:07) R.Foster reported in as eligible. B.Roethlisberger pass incomplete short right to R.Mendenhall.I will give that percentage figure at the end to compare apples with apples, though I have aforementioned that it is misleading when the bottom line everything included is on 50 plays.Big Ben got sacked 3 times and Steelers delayed the game on a 4th down once. I will not classify them as run or pass plays and do not know if they should be in the dataset. I am sure they change percentages if classified one way or taken out. I just presented them.
From a wording point, moving the chains translates to success, and not doing so translates to failure in the following remarks
01 - Steelers were successful 32 times out of 50. (64%)
02 - Of these 32 successful plays 21 were RUN plays. (66%)
03 - Steelers chose to RUN the ball 31 times out of 50. (62%)
04 - Steelers chose to PASS the ball 19 times out of 50. (38%)
05 - Steelers chose to invlove Mendenhall 15 times out of 50 in ALL plays. (30%)
06 - Steelers chose to involve Mendenhall 13 times out of 31 in RUN plays. (42%)
07 - Mendenhall was successful 7 times out of 13 RUN plays he was involved in. (54%)
08 - Mendenhall was successful 1 time out of 2 PASS plays he was involved in. (50%)
09 - Mendenhall was was involved in 7 times out of 21 successful RUN plays. (33%)
10 - Mendenhall was involved in 6 times out of 10 failed RUN plays. (60%)
11 - Steelers chose an offensive play for a 4th down 7 times from this set and all were 4-1 situations.
12 - Steelers was successful 6 times out of 7 of the 4th down plays from 4-1 situations.
13 - Big Ben was involved in 6, and Mendenhall was involved in 1 out of the 7 of the 4th down plays from 4-1 situations.
14 - Mendenhall was successful 1 time out of 1 of the 4th down plays from 4-1 situations. he was involved in. (100%)
A few simple conclusions about the article in the quote and the argument that builds on it.
01 - Yes the Steelers were successful 6 times out of 7 at 4-1 situations and they ran the ball all those times BUT they did not choose to go with Mendenhall.
02 - Only a third of RUN plays involved Mendenhall for 3rd & 4th and short situations even though he was the primary ball carrier.
03 - When Steelers chose a RUN play, they were successful 66% of the time, Mendenhall was successful 54% of the time.
04 - When Steelers chose a RUN play, 60% of their failed RUNs came from Mendenhall.
In brief, I look at the same data through play by play, and all I see is that Steelers did not put their trust in Mendenhall for those situations for RUN plays; Mendenhall brought their percentage down when they did and increased the number of times they failed to move the chains.
Nothing here tells me that he is their short yardage guy. It just tells me that Steelers were successful with the run, but more so when they did not choose to go with Mendenhall which seems to coincide with observational posts from Steelers fans.