Fortunately for Arizona fans, Williams is already looking toward the future.
"It really sucked when it happened," Williams said. "It hurt instantly, so I knew something was up with it, but I'm not letting it get me down.
"When I got back to the locker room I knew it was something serious and I was probably done for the season."
Williams is remaining tight-lipped about his diagnosis, but he is upbeat about his prospects for a full recovery.
"I don't really want to get into the injury itself, but the good news is that everything will be alright big picture," he said.
"The doctor told me I should be able to make a recovery and I'm in the process of just trying to heal."
The defensive lineman plans on using the off time to improve his strength.
"I obviously can't play the rest of the season, so I'm going to try and make the most out of my time," Williams said. "I plan on living in the weight room and doing everything possible to improve my upper body strength while I rehabilitate my leg."
The Arizona coaches have stayed in touch with Williams.
"They've been very supportive," Williams said. "They basically told me they still want me and that they are still very excited to get me on campus.
"The encouragement has meant a lot because these have been a tough couple weeks for me. I'm not worried, though. I will be back better than ever."