http://www.csnbayarea.com/49ers/roman-saves-right-plays-right-moments
The 49ers were already in field-goal range because of a play called
“97 G-Rub” that Roman was waiting for the right time to unveil.
“G-Ro (Roman) had been saving that call in his back pocket and picked the exact right time to call it,” 49ers coach Jim Harbaugh said. “And Frank executed it.”
The play design utilized different angles at the point of attack, Roman said. The play was blocked well on the left side of the line, and it allowed Gore to take advantage of over-pursuit from the aggressive Seahawks defense.
“We’ve never ever run it before since we’ve been here,” Roman said. “And it’s just something we were keeping in the back pocket for the right time. And it’s one of those things, you always question,
‘Should we run it early and pop it early?’ You like to have some stuff in your hip pocket for the right time.”