Matt Tennant is also talking about the ability to play multiple positions including either guard spot. A San Fran blog had the 40 times of high profile linemen. As you can see, Tennant was on the fast side.
Here are the unofficial times of other offensive linemen of note. West Viriginia's Ed Wang 5.46; Cal's Mike Tepper 5.37; Notre Dame's Sam Young 5.19, LSU's Ciron Black 5.49, Iowa's Bryan Bulga 5.26; Iowa's Kyle Calloway 5.51, Rutgers's Anthony Davis 4.38, UMass's Vladmir Ducasse 5.21; Idaho's Mike Iupati 5.26; Ole Miss's John Jerry 5.18; Oklahoma State's Russell Okung 5.17; Arkansas's Mitch Petrus 5.29; Boston College's Matt Tennant 5.13 and Texas Tech's Brandon Carter 5.36. Unofficial times are typically slower than official times.