Here's why:
* He wasn't in the game: The Rock was not included in the roster for SmackDown vs. Raw 2011. He was retired from wrestling at the time and did not make a return until 2011.
* No DLC option: There were no downloadable content (DLC) packs that added The Rock to the game's roster.
You can, however, play as The Rock in other WWE games where he was included, such as:
* WWE '12: He was a playable character and even had his "People's Elbow" finisher.
* WWE 2K14: He was a playable character and had a special "Attitude Era" version of himself.
* WWE 2K15, 2K16, 2K17, 2K19, 2K20, 2K22: He was included as a playable character in these games, with different variations and attires.
If you are looking for a game with The Rock, you'll need to choose one that features him in the roster!