He wasn't at the Combine. He's probably reading books about the fundamentals of being a blocking back.
Here are the 40 times for the RBs at the Combine. A lot of them didn't run for one reason or another. I don't believe any of them are white. (Noah Herron of Northwestern is this year's Robert Smith/Nick Goings type.)
<TABLE cellSpacing=0 bgColor=#ffffff border=1>
<T>
<TR vAlign=top>
<TD borderColor=#c0c0c0>Kevin Dudley</TD>
<TD borderColor=#c0c0c0>Michigan</TD>
<TD borderColor=#c0c0c0>6004</TD>
<TD borderColor=#c0c0c0>238</TD>
<TD borderColor=#c0c0c0>5.00</TD>
<TD borderColor=#c0c0c0>4.96</TD></TR>
<TR vAlign=top>
<TD borderColor=#c0c0c0>Justin Green</TD>
<TD borderColor=#c0c0c0>Montana</TD>
<TD borderColor=#c0c0c0>5113</TD>
<TD borderColor=#c0c0c0>251</TD>
<TD borderColor=#c0c0c0>4.84</TD>
<TD borderColor=#c0c0c0>4.84</TD></TR>
<TR vAlign=top>
<TD borderColor=#c0c0c0>Madison Hedge*******</TD>
<TD borderColor=#c0c0c0>North Carolina</TD>
<TD borderColor=#c0c0c0>6030</TD>
<TD borderColor=#c0c0c0>266</TD>
<TD borderColor=#c0c0c0>4.94</TD>
<TD borderColor=#c0c0c0>4.85</TD></TR>
<TR vAlign=top>
<TD borderColor=#c0c0c0>Keith Joseph</TD>
<TD borderColor=#c0c0c0>Texas A&M</TD>
<TD borderColor=#c0c0c0>6017</TD>
<TD borderColor=#c0c0c0>254</TD>
<TD borderColor=#c0c0c0>4.77</TD>
<TD borderColor=#c0c0c0>4.75</TD></TR>
<TR vAlign=top>
<TD borderColor=#c0c0c0>Will Matthews</TD>
<TD borderColor=#c0c0c0>Texas</TD>
<TD borderColor=#c0c0c0>6010</TD>
<TD borderColor=#c0c0c0>248</TD>
<TD borderColor=#c0c0c0>
</TD>
<TD borderColor=#c0c0c0>
</TD></TR>
<TR vAlign=top>
<TD borderColor=#c0c0c0>Zach Tuiasosopo</TD>
<TD borderColor=#c0c0c0>Washington</TD>
<TD borderColor=#c0c0c0>6016</TD>
<TD borderColor=#c0c0c0>249</TD>
<TD borderColor=#c0c0c0>
</TD>
<TD borderColor=#c0c0c0>
</TD></TR>
<TR vAlign=top>
<TD borderColor=#c0c0c0>Manuel White Jr.</TD>
<TD borderColor=#c0c0c0>UCLA</TD>
<TD borderColor=#c0c0c0>6022?</TD>
<TD borderColor=#c0c0c0>244</TD>
<TD borderColor=#c0c0c0>
</TD>
<TD borderColor=#c0c0c0>
</TD></TR>
<TR vAlign=top>
<TD borderColor=#c0c0c0>J.J. Arrington</TD>
<TD borderColor=#c0c0c0>California</TD>
<TD borderColor=#c0c0c0>5087</TD>
<TD borderColor=#c0c0c0>214</TD>
<TD borderColor=#c0c0c0>4.43</TD>
<TD borderColor=#c0c0c0>4.41</TD></TR>
<TR vAlign=top>
<TD borderColor=#c0c0c0>Marion Barber III</TD>
<TD borderColor=#c0c0c0>Minnesota</TD>
<TD borderColor=#c0c0c0>5113</TD>
<TD borderColor=#c0c0c0>221</TD>
<TD borderColor=#c0c0c0>DNR</TD>
<TD borderColor=#c0c0c0>
</TD></TR>
<TR vAlign=top>
<TD borderColor=#c0c0c0>Cedric Benson</TD>
<TD borderColor=#c0c0c0>Texas</TD>
<TD borderColor=#c0c0c0>5104</TD>
<TD borderColor=#c0c0c0>222</TD>
<TD borderColor=#c0c0c0>DNR</TD>
<TD borderColor=#c0c0c0>
</TD></TR>
<TR vAlign=top>
<TD borderColor=#c0c0c0>DeCori Birmingham</TD>
<TD borderColor=#c0c0c0>Arkansas</TD>
<TD borderColor=#c0c0c0>5096</TD>
<TD borderColor=#c0c0c0>210</TD>
<TD borderColor=#c0c0c0>4.66</TD>
<TD borderColor=#c0c0c0>4.65</TD></TR>
<TR vAlign=top>
<TD borderColor=#c0c0c0>Nehemiah Broughton</TD>
<TD borderColor=#c0c0c0>Citadel</TD>
<TD borderColor=#c0c0c0>5114</TD>
<TD borderColor=#c0c0c0>250</TD>
<TD borderColor=#c0c0c0>4.62</TD>
<TD borderColor=#c0c0c0>4.65</TD></TR>
<TR vAlign=top>
<TD borderColor=#c0c0c0>Ronnie Brown</TD>
<TD borderColor=#c0c0c0>Auburn</TD>
<TD borderColor=#c0c0c0>6002</TD>
<TD borderColor=#c0c0c0>233</TD>
<TD borderColor=#c0c0c0>4.45</TD>
<TD borderColor=#c0c0c0>4.42</TD></TR>
<TR vAlign=top>
<TD borderColor=#c0c0c0>Maurice Clarett</TD>
<TD borderColor=#c0c0c0>x-Ohio State</TD>
<TD borderColor=#c0c0c0>5115</TD>
<TD borderColor=#c0c0c0>234</TD>
<TD borderColor=#c0c0c0>4.84</TD>
<TD borderColor=#c0c0c0>4.81</TD></TR>
<TR vAlign=top>
<TD borderColor=#c0c0c0>Deandra Cobb</TD>
<TD borderColor=#c0c0c0>Michigan State</TD>
<TD borderColor=#c0c0c0>5096</TD>
<TD borderColor=#c0c0c0>196</TD>
<TD borderColor=#c0c0c0>4.44</TD>
<TD borderColor=#c0c0c0>4.49</TD></TR>
<TR vAlign=top>
<TD borderColor=#c0c0c0>Anthony Davis</TD>
<TD borderColor=#c0c0c0>Wisconsin</TD>
<TD borderColor=#c0c0c0>5065</TD>
<TD borderColor=#c0c0c0>200</TD>
<TD borderColor=#c0c0c0>4.56</TD>
<TD borderColor=#c0c0c0>DNR</TD></TR>
<TR vAlign=top>
<TD borderColor=#c0c0c0>Ciatrick Fason</TD>
<TD borderColor=#c0c0c0>Florida</TD>
<TD borderColor=#c0c0c0>6006</TD>
<TD borderColor=#c0c0c0>207</TD>
<TD borderColor=#c0c0c0>DNR</TD>
<TD borderColor=#c0c0c0>
</TD></TR>
<TR vAlign=top>
<TD borderColor=#c0c0c0>Lionel Gates</TD>
<TD borderColor=#c0c0c0>Louisville</TD>
<TD borderColor=#c0c0c0>5115</TD>
<TD borderColor=#c0c0c0>222</TD>
<TD borderColor=#c0c0c0>4.75</TD>
<TD borderColor=#c0c0c0>4.62</TD></TR>
<TR vAlign=top>
<TD borderColor=#c0c0c0>Frank Gore</TD>
<TD borderColor=#c0c0c0>Miami-Fl</TD>
<TD borderColor=#c0c0c0>5093</TD>
<TD borderColor=#c0c0c0>217</TD>
<TD borderColor=#c0c0c0>DNR</TD>
<TD borderColor=#c0c0c0>
</TD></TR>
<TR vAlign=top>
<TD borderColor=#c0c0c0>Ryan Grant</TD>
<TD borderColor=#c0c0c0>Notre Dame</TD>
<TD borderColor=#c0c0c0>6011</TD>
<TD borderColor=#c0c0c0>215</TD>
<TD borderColor=#c0c0c0>4.60</TD>
<TD borderColor=#c0c0c0>4.56</TD></TR>
<TR vAlign=top>
<TD borderColor=#c0c0c0>Kay Jay Harris</TD>
<TD borderColor=#c0c0c0>West Virginia</TD>
<TD borderColor=#c0c0c0>6003</TD>
<TD borderColor=#c0c0c0>241</TD>
<TD borderColor=#c0c0c0>4.65</TD>
<TD borderColor=#c0c0c0>4.60</TD></TR>
<TR vAlign=top>
<TD borderColor=#c0c0c0>Alex Haynes</TD>
<TD borderColor=#c0c0c0>Central Florida</TD>
<TD borderColor=#c0c0c0>5097</TD>
<TD borderColor=#c0c0c0>223</TD>
<TD borderColor=#c0c0c0>
</TD>
<TD borderColor=#c0c0c0>
</TD></TR>
<TR vAlign=top>
<TD borderColor=#c0c0c0>Noah Herron</TD>
<TD borderColor=#c0c0c0>Northwestern</TD>
<TD borderColor=#c0c0c0>5110</TD>
<TD borderColor=#c0c0c0>224?</TD>
<TD borderColor=#c0c0c0>
</TD>
<TD borderColor=#c0c0c0>
</TD></TR>
<TR vAlign=top>
<TD borderColor=#c0c0c0>Cedric Houston</TD>
<TD borderColor=#c0c0c0>Tennessee</TD>
<TD borderColor=#c0c0c0>5106</TD>
<TD borderColor=#c0c0c0>225</TD>
<TD borderColor=#c0c0c0>
</TD>
<TD borderColor=#c0c0c0>
</TD></TR>
<TR vAlign=top>
<TD borderColor=#c0c0c0>Ray Hudson</TD>
<TD borderColor=#c0c0c0>Alabama</TD>
<TD borderColor=#c0c0c0>5096</TD>
<TD borderColor=#c0c0c0>192</TD>
<TD borderColor=#c0c0c0>
</TD>
<TD borderColor=#c0c0c0>
</TD></TR>
<TR vAlign=top>
<TD borderColor=#c0c0c0>Brandon Jacobs</TD>
<TD borderColor=#c0c0c0>Southern Illinois</TD>
<TD borderColor=#c0c0c0>6042</TD>
<TD borderColor=#c0c0c0>257</TD>
<TD borderColor=#c0c0c0>
</TD>
<TD borderColor=#c0c0c0>
</TD></TR>
<TR vAlign=top>
<TD borderColor=#c0c0c0>T.A. McLendon</TD>
<TD borderColor=#c0c0c0>North Carolina State</TD>
<TD borderColor=#c0c0c0>5102</TD>
<TD borderColor=#c0c0c0>235</TD>
<TD borderColor=#c0c0c0>
</TD>
<TD borderColor=#c0c0c0>
</TD></TR>
<TR vAlign=top>
<TD borderColor=#c0c0c0>Ryan Moats</TD>
<TD borderColor=#c0c0c0>Louisiana Tech</TD>
<TD borderColor=#c0c0c0>5082</TD>
<TD borderColor=#c0c0c0>210</TD>
<TD borderColor=#c0c0c0>
</TD>
<TD borderColor=#c0c0c0>
</TD></TR>
<TR vAlign=top>
<TD borderColor=#c0c0c0>Vernand Morency</TD>
<TD borderColor=#c0c0c0>Oklahoma State</TD>
<TD borderColor=#c0c0c0>5095</TD>
<TD borderColor=#c0c0c0>212</TD>
<TD borderColor=#c0c0c0>
</TD>
<TD borderColor=#c0c0c0>
</TD></TR>
<TR vAlign=top>
<TD borderColor=#c0c0c0>Alvin Pearman</TD>
<TD borderColor=#c0c0c0>Virginia</TD>
<TD borderColor=#c0c0c0>5093</TD>
<TD borderColor=#c0c0c0>208</TD>
<TD borderColor=#c0c0c0>
</TD>
<TD borderColor=#c0c0c0>
</TD></TR>
<TR vAlign=top>
<TD borderColor=#c0c0c0>Bobby Purify</TD>
<TD borderColor=#c0c0c0>Colorado</TD>
<TD borderColor=#c0c0c0>6003</TD>
<TD borderColor=#c0c0c0>210</TD>
<TD borderColor=#c0c0c0>
</TD>
<TD borderColor=#c0c0c0>
</TD></TR>
<TR vAlign=top>
<TD borderColor=#c0c0c0>Walter Reyes</TD>
<TD borderColor=#c0c0c0>Syracuse</TD>
<TD borderColor=#c0c0c0>5100</TD>
<TD borderColor=#c0c0c0>209</TD>
<TD borderColor=#c0c0c0>
</TD>
<TD borderColor=#c0c0c0>
</TD></TR>
<TR vAlign=top>
<TD borderColor=#c0c0c0>Eric Shelton</TD>
<TD borderColor=#c0c0c0>Louisville</TD>
<TD borderColor=#c0c0c0>6014</TD>
<TD borderColor=#c0c0c0>246</TD>
<TD borderColor=#c0c0c0>
</TD>
<TD borderColor=#c0c0c0>
</TD></TR>
<TR vAlign=top>
<TD borderColor=#c0c0c0>Darren Sproles</TD>
<TD borderColor=#c0c0c0>Kansas State</TD>
<TD borderColor=#c0c0c0>5061</TD>
<TD borderColor=#c0c0c0>187</TD>
<TD borderColor=#c0c0c0>
</TD>
<TD borderColor=#c0c0c0>
</TD></TR>
<TR vAlign=top>
<TD borderColor=#c0c0c0>Carnell Williams</TD>
<TD borderColor=#c0c0c0>Auburn</TD>
<TD borderColor=#c0c0c0>5107</TD>
<TD borderColor=#c0c0c0>217</TD>
<TD borderColor=#c0c0c0>
</TD></TR></T></TABLE>