Christian McCaffrey will sit out the Hyundai Sun Bowl to focus on his NFL draft preparation, he announced Monday on Twitter.

"Very tough decision, but I have decided not to play in the Sun Bowl so I can begin my draft prep immediately," McCaffrey wrote on Twitter. "Thx to all my teammates for their 100% support -- It means a lot to me. Go Cardinal!"

McCaffrey announced Dec. 7 that he would forgo his senior season to enter the draft. 

McCaffrey joins LSU running back Leonard Fournette as another high-profile name to sit out the bowl season. Fournette announced Friday that he would not play in the Buffalo Wild Wings Citrus Bowl on Dec. 31 against Louisville.

"We understand that this was a very difficult decision. For three years Christian has not only been a great player, but a great teammate as well," Stanford coach David Shaw said in a statement. "We wish him great success at the next level, as we continue our preparation for the Sun Bowl."

RealGM's Jeff Risdon ranks McCaffrey second amongst prospective running backs in the 2017 NFL Draft while Fournette ranks fourth.